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56722148 = 2272025791
BaseRepresentation
bin1101100001100…
…0001011100100
310221201210011022
43120120023210
5104010102043
65343430312
71256062460
oct330301344
9127653138
1056722148
112a02220a
1216bb5398
13b9a0002
1477674a0
154ea6868
hex36182e4

56722148 has 12 divisors (see below), whose sum is σ = 113444352. Its totient is φ = 24309480.

The previous prime is 56722129. The next prime is 56722153. The reversal of 56722148 is 84122765.

56722148 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012868 + ... + 1012923.

It is an arithmetic number, because the mean of its divisors is an integer number (9453696).

Almost surely, 256722148 is an apocalyptic number.

It is an amenable number.

56722148 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.

56722148 is a wasteful number, since it uses less digits than its factorization.

56722148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025802 (or 2025800 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 56722148 is about 7531.4107576204. The cubic root of 56722148 is about 384.2237646201.

The spelling of 56722148 in words is "fifty-six million, seven hundred twenty-two thousand, one hundred forty-eight".

Divisors: 1 2 4 7 14 28 2025791 4051582 8103164 14180537 28361074 56722148