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8931973492 = 22131941311709
BaseRepresentation
bin10000101000110001…
…10001100101110100
3212001111002021012001
420110120301211310
5121243041122432
64034151105044
7434225344021
oct102430614564
925044067161
108931973492
113873958982
121893372184
13ac4652b20
1460a388548
153742409e7
hex214631974

8931973492 has 96 divisors (see below), whose sum is σ = 18235526400. Its totient is φ = 3792614400.

The previous prime is 8931973489. The next prime is 8931973513. The reversal of 8931973492 is 2943791398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12597634 + ... + 12598342.

It is an arithmetic number, because the mean of its divisors is an integer number (189953400).

Almost surely, 28931973492 is an apocalyptic number.

8931973492 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

8931973492 is an abundant number, since it is smaller than the sum of its proper divisors (9303552908).

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

8931973492 is a wasteful number, since it uses less digits than its factorization.

8931973492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1095 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 55.

The square root of 8931973492 is about 94509.1185653533. The cubic root of 8931973492 is about 2074.8297913900.

The spelling of 8931973492 in words is "eight billion, nine hundred thirty-one million, nine hundred seventy-three thousand, four hundred ninety-two".

Divisors: 1 2 4 13 19 26 38 41 52 76 82 164 247 311 494 533 622 709 779 988 1066 1244 1418 1558 2132 2836 3116 4043 5909 8086 9217 10127 11818 12751 13471 16172 18434 20254 23636 25502 26942 29069 36868 40508 51004 53884 58138 76817 116276 153634 165763 175123 220499 242269 307268 331526 350246 377897 440998 484538 552311 663052 700492 755794 881996 969076 1104622 1511588 2209244 2866487 3149497 4189481 5732974 6298994 7180043 8378962 9040459 11465948 12597988 14360086 16757924 18080918 28720172 36161836 54463253 108926506 117525967 171768721 217853012 235051934 343537442 470103868 687074884 2232993373 4465986746 8931973492