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72108152 = 23172947389
BaseRepresentation
bin1000100110001…
…00100001111000
312000200110210022
410103010201320
5121424430102
611053310012
71533623564
oct423044170
9160613708
1072108152
1137780a16
1220195308
1311c2925c
1498106a4
1564e55a2
hex44c4878

72108152 has 64 divisors (see below), whose sum is σ = 151632000. Its totient is φ = 31983616.

The previous prime is 72108131. The next prime is 72108191. The reversal of 72108152 is 25180127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185174 + ... + 185562.

It is an arithmetic number, because the mean of its divisors is an integer number (2369250).

Almost surely, 272108152 is an apocalyptic number.

It is an amenable number.

72108152 is an abundant number, since it is smaller than the sum of its proper divisors (79523848).

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

72108152 is a wasteful number, since it uses less digits than its factorization.

72108152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 72108152 is about 8491.6519005433. The cubic root of 72108152 is about 416.2249615350.

Adding to 72108152 its reverse (25180127), we get a palindrome (97288279).

The spelling of 72108152 in words is "seventy-two million, one hundred eight thousand, one hundred fifty-two".

Divisors: 1 2 4 8 17 29 34 47 58 68 94 116 136 188 232 376 389 493 778 799 986 1363 1556 1598 1972 2726 3112 3196 3944 5452 6392 6613 10904 11281 13226 18283 22562 23171 26452 36566 45124 46342 52904 73132 90248 92684 146264 185368 191777 310811 383554 530207 621622 767108 1060414 1243244 1534216 2120828 2486488 4241656 9013519 18027038 36054076 72108152