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72025280 = 265225079
BaseRepresentation
bin1000100101100…
…00010011000000
312000112021002222
410102300103000
5121414302110
611051430212
71533130145
oct422602300
9160467088
1072025280
1137724728
1220155368
1311bca612
1497cc3cc
1564cac55
hex44b04c0

72025280 has 28 divisors (see below), whose sum is σ = 171510960. Its totient is φ = 28809984.

The previous prime is 72025271. The next prime is 72025319. The reversal of 72025280 is 8252027.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112220 + ... + 112859.

Almost surely, 272025280 is an apocalyptic number.

It is an amenable number.

72025280 is an abundant number, since it is smaller than the sum of its proper divisors (99485680).

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

72025280 is a wasteful number, since it uses less digits than its factorization.

72025280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225096 (or 225086 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 72025280 is about 8486.7708817901. The cubic root of 72025280 is about 416.0654482825.

The spelling of 72025280 in words is "seventy-two million, twenty-five thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 225079 450158 900316 1125395 1800632 2250790 3601264 4501580 7202528 9003160 14405056 18006320 36012640 72025280