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75125700 = 223252136421
BaseRepresentation
bin1000111101001…
…01001111000100
312020100210002100
410132211033010
5123213010300
611242112100
71601362236
oct436451704
9166323070
1075125700
1139452061
12211ab630
13127448a0
149d98256
1568de700
hex47a53c4

75125700 has 108 divisors (see below), whose sum is σ = 253630468. Its totient is φ = 18489600.

The previous prime is 75125647. The next prime is 75125717. The reversal of 75125700 is 752157.

It can be written as a sum of positive squares in 6 ways, for example, as 14379264 + 60746436 = 3792^2 + 7794^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8490 + ... + 14910.

Almost surely, 275125700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75125700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126815234).

75125700 is an abundant number, since it is smaller than the sum of its proper divisors (178504768).

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

75125700 is a wasteful number, since it uses less digits than its factorization.

75125700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454 (or 6444 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 75125700 is about 8667.5082924679. The cubic root of 75125700 is about 421.9518000099.

Adding to 75125700 its reverse (752157), we get a palindrome (75877857).

The spelling of 75125700 in words is "seventy-five million, one hundred twenty-five thousand, seven hundred".

Divisors: 1 2 3 4 5 6 9 10 12 13 15 18 20 25 26 30 36 39 45 50 52 60 65 75 78 90 100 117 130 150 156 180 195 225 234 260 300 325 390 450 468 585 650 780 900 975 1170 1300 1950 2340 2925 3900 5850 6421 11700 12842 19263 25684 32105 38526 57789 64210 77052 83473 96315 115578 128420 160525 166946 192630 231156 250419 288945 321050 333892 385260 417365 481575 500838 577890 642100 751257 834730 963150 1001676 1155780 1252095 1444725 1502514 1669460 1926300 2086825 2504190 2889450 3005028 3756285 4173650 5008380 5778900 6260475 7512570 8347300 12520950 15025140 18781425 25041900 37562850 75125700