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88972730 = 25721117971
BaseRepresentation
bin1010100110110…
…01110110111010
320012102021122022
411103121312322
5140234111410
612454554442
72130153500
oct523316672
9205367568
1088972730
114624a590
1225968a22
13155824b2
14bb60670
157c27455
hex54d9dba

88972730 has 96 divisors (see below), whose sum is σ = 215410752. Its totient is φ = 26073600.

The previous prime is 88972699. The next prime is 88972777. The reversal of 88972730 is 3727988.

It is a happy number.

It is a super-2 number, since 2×889727302 = 15832293367305800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91145 + ... + 92115.

It is an arithmetic number, because the mean of its divisors is an integer number (2243862).

Almost surely, 288972730 is an apocalyptic number.

88972730 is an abundant number, since it is smaller than the sum of its proper divisors (126438022).

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

88972730 is a wasteful number, since it uses less digits than its factorization.

88972730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 88972730 is about 9432.5357142181. The cubic root of 88972730 is about 446.4289043015.

The spelling of 88972730 in words is "eighty-eight million, nine hundred seventy-two thousand, seven hundred thirty".

Divisors: 1 2 5 7 10 11 14 17 22 34 35 49 55 70 77 85 98 110 119 154 170 187 238 245 374 385 490 539 595 770 833 935 971 1078 1190 1309 1666 1870 1942 2618 2695 4165 4855 5390 6545 6797 8330 9163 9710 10681 13090 13594 16507 18326 21362 33014 33985 45815 47579 53405 67970 74767 82535 91630 95158 106810 115549 149534 165070 181577 231098 237895 363154 373835 475790 523369 577745 747670 808843 907885 1046738 1155490 1271039 1617686 1815770 2542078 2616845 4044215 5233690 6355195 8088430 8897273 12710390 17794546 44486365 88972730