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72508375 = 531913037
BaseRepresentation
bin1000101001001…
…10001111010111
312001102210210101
410110212033113
5122030232000
611110034531
71540211452
oct424461727
9161383711
1072508375
1137a24685
1220348a47
1312039484
1498b6499
156573e6a
hex45263d7

72508375 has 16 divisors (see below), whose sum is σ = 90994176. Its totient is φ = 57684000.

The previous prime is 72508343. The next prime is 72508379. The reversal of 72508375 is 57380527.

It is not a de Polignac number, because 72508375 - 25 = 72508343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72508379) 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, 22357 + ... + 25393.

It is an arithmetic number, because the mean of its divisors is an integer number (5687136).

Almost surely, 272508375 is an apocalyptic number.

72508375 is a deficient number, since it is larger than the sum of its proper divisors (18485801).

72508375 is a wasteful number, since it uses less digits than its factorization.

72508375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243 (or 3233 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 72508375 is about 8515.1849656951. The cubic root of 72508375 is about 416.9936011839.

It can be divided in two parts, 7250 and 8375, that added together give a 6-th power (15625 = 56).

The spelling of 72508375 in words is "seventy-two million, five hundred eight thousand, three hundred seventy-five".

Divisors: 1 5 25 125 191 955 3037 4775 15185 23875 75925 379625 580067 2900335 14501675 72508375