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72635028 = 22355710867
BaseRepresentation
bin1000101010001…
…01001010010100
312001200020112020
410111011022110
5122043310103
611112453140
71541246634
oct425051224
9161606466
1072635028
1138000854
12203aa1b0
131208200b
14990a6c4
15659b753
hex4545294

72635028 has 24 divisors (see below), whose sum is σ = 169801632. Its totient is φ = 24165984.

The previous prime is 72635023. The next prime is 72635029. The reversal of 72635028 is 82053627.

It is a self number, because there is not a number n which added to its sum of digits gives 72635028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72635021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1251 + ... + 12117.

It is an arithmetic number, because the mean of its divisors is an integer number (7075068).

Almost surely, 272635028 is an apocalyptic number.

It is an amenable number.

72635028 is an abundant number, since it is smaller than the sum of its proper divisors (97166604).

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

72635028 is a wasteful number, since it uses less digits than its factorization.

72635028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11431 (or 11429 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 72635028 is about 8522.6186116709. The cubic root of 72635028 is about 417.2362525556.

The spelling of 72635028 in words is "seventy-two million, six hundred thirty-five thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 557 1114 1671 2228 3342 6684 10867 21734 32601 43468 65202 130404 6052919 12105838 18158757 24211676 36317514 72635028