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72672486 = 2322975273
BaseRepresentation
bin1000101010011…
…10010011100110
312001202010220120
410111032103212
5122101004421
611113342410
71541464065
oct425162346
9161663816
1072672486
1138026a07
1220407a06
1312096093
14991a1dc
1565a78c6
hex454e4e6

72672486 has 16 divisors (see below), whose sum is σ = 145435824. Its totient is φ = 24209024.

The previous prime is 72672469. The next prime is 72672493. The reversal of 72672486 is 68427627.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11146 + ... + 16418.

It is an arithmetic number, because the mean of its divisors is an integer number (9089739).

Almost surely, 272672486 is an apocalyptic number.

72672486 is an abundant number, since it is smaller than the sum of its proper divisors (72763338).

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

72672486 is a wasteful number, since it uses less digits than its factorization.

72672486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7575.

The product of its digits is 225792, while the sum is 42.

The square root of 72672486 is about 8524.8158924401. The cubic root of 72672486 is about 417.3079633639.

The spelling of 72672486 in words is "seventy-two million, six hundred seventy-two thousand, four hundred eighty-six".

Divisors: 1 2 3 6 2297 4594 5273 6891 10546 13782 15819 31638 12112081 24224162 36336243 72672486