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748875480990 = 235713659416257
BaseRepresentation
bin10101110010111000111…
…01001111111110011110
32122120222102100002021120
422321130131033332132
544232144110342430
61332010104311410
7105050555363130
oct12713435177636
92576872302246
10748875480990
1126966175a99a
12101178a72566
13558072529b0
1428362553050
151472ed71610
hexae5c74ff9e

748875480990 has 128 divisors (see below), whose sum is σ = 2215424977920. Its totient is φ = 157764354048.

The previous prime is 748875480973. The next prime is 748875481027. The reversal of 748875480990 is 99084578847.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1590942 + ... + 2007198.

It is an arithmetic number, because the mean of its divisors is an integer number (17308007640).

Almost surely, 2748875480990 is an apocalyptic number.

748875480990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 748875480990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1107712488960).

748875480990 is an abundant number, since it is smaller than the sum of its proper divisors (1466549496930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

748875480990 is a wasteful number, since it uses less digits than its factorization.

748875480990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416946.

The product of its (nonzero) digits is 162570240, while the sum is 69.

The spelling of 748875480990 in words is "seven hundred forty-eight billion, eight hundred seventy-five million, four hundred eighty thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 65 70 78 91 105 130 182 195 210 273 390 455 546 659 910 1318 1365 1977 2730 3295 3954 4613 6590 8567 9226 9885 13839 17134 19770 23065 25701 27678 42835 46130 51402 59969 69195 85670 119938 128505 138390 179907 257010 299845 359814 416257 599690 832514 899535 1248771 1799070 2081285 2497542 2913799 4162570 5411341 5827598 6243855 8741397 10822682 12487710 14568995 16234023 17482794 27056705 29137990 32468046 37879387 43706985 54113410 75758774 81170115 87413970 113638161 162340230 189396935 227276322 274313363 378793870 548626726 568190805 822940089 1136381610 1371566815 1645880178 1920193541 2743133630 3566073719 3840387082 4114700445 5760580623 7132147438 8229400890 9600967705 10698221157 11521161246 17830368595 19201935410 21396442314 24962516033 28802903115 35660737190 49925032066 53491105785 57605806230 74887548099 106982211570 124812580165 149775096198 249625160330 374437740495 748875480990