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71268904 = 2372355333
BaseRepresentation
bin1000011111101…
…11101000101000
311222002211120001
410033313220220
5121221101104
611023312344
71523530030
oct417675050
9158084501
1071268904
1137258423
121ba4b6b4
13119c4265
1496728c0
1563cbaa4
hex43f7a28

71268904 has 32 divisors (see below), whose sum is σ = 159361920. Its totient is φ = 29215296.

The previous prime is 71268889. The next prime is 71268937. The reversal of 71268904 is 40986217.

It is a super-2 number, since 2×712689042 = 10158513354722432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26379 + ... + 28954.

It is an arithmetic number, because the mean of its divisors is an integer number (4980060).

Almost surely, 271268904 is an apocalyptic number.

It is an amenable number.

71268904 is an abundant number, since it is smaller than the sum of its proper divisors (88093016).

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

71268904 is a wasteful number, since it uses less digits than its factorization.

71268904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55369 (or 55365 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 71268904 is about 8442.0912101209. The cubic root of 71268904 is about 414.6038780781.

The spelling of 71268904 in words is "seventy-one million, two hundred sixty-eight thousand, nine hundred four".