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68627972 = 2272450999
BaseRepresentation
bin1000001011100…
…10111000000100
311210010122212202
410011302320010
5120032043342
610450534032
71462220360
oct405627004
9153118782
1068627972
1135814236
121ab97318
13112ab18a
1491862a0
156059332
hex4172e04

68627972 has 12 divisors (see below), whose sum is σ = 137256000. Its totient is φ = 29411976.

The previous prime is 68627971. The next prime is 68627983. The reversal of 68627972 is 27972686.

68627972 is an admirable number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68627971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225472 + ... + 1225527.

It is an arithmetic number, because the mean of its divisors is an integer number (11438000).

Almost surely, 268627972 is an apocalyptic number.

It is an amenable number.

68627972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68627972 is a wasteful number, since it uses less digits than its factorization.

68627972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451010 (or 2451008 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 68627972 is about 8284.2001424398. The cubic root of 68627972 is about 409.4181156694.

The spelling of 68627972 in words is "sixty-eight million, six hundred twenty-seven thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 2450999 4901998 9803996 17156993 34313986 68627972