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80875392 = 2731317953
BaseRepresentation
bin1001101001000…
…00111110000000
312122011220011220
410310200332000
5131201003032
612005235040
72001300213
oct464407600
9178156156
1080875392
1141719974
1223102a80
13139a8980
14aa5377a
15717812c
hex4d20f80

80875392 has 128 divisors (see below), whose sum is σ = 245216160. Its totient is φ = 23396352.

The previous prime is 80875369. The next prime is 80875397. The reversal of 80875392 is 29357808.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80875397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84388 + ... + 85340.

Almost surely, 280875392 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 80875392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122608080).

80875392 is an abundant number, since it is smaller than the sum of its proper divisors (164340768).

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

80875392 is a wasteful number, since it uses less digits than its factorization.

80875392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 80875392 is about 8993.0746688772. The cubic root of 80875392 is about 432.4528858209.

The spelling of 80875392 in words is "eighty million, eight hundred seventy-five thousand, three hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 13 16 17 24 26 32 34 39 48 51 52 64 68 78 96 102 104 128 136 156 192 204 208 221 272 312 384 408 416 442 544 624 663 816 832 884 953 1088 1248 1326 1632 1664 1768 1906 2176 2496 2652 2859 3264 3536 3812 4992 5304 5718 6528 7072 7624 10608 11436 12389 14144 15248 16201 21216 22872 24778 28288 30496 32402 37167 42432 45744 48603 49556 60992 64804 74334 84864 91488 97206 99112 121984 129608 148668 182976 194412 198224 210613 259216 297336 365952 388824 396448 421226 518432 594672 631839 777648 792896 842452 1036864 1189344 1263678 1555296 1585792 1684904 2073728 2378688 2527356 3110592 3369808 4757376 5054712 6221184 6739616 10109424 13479232 20218848 26958464 40437696 80875392