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56144260 = 2252807213
BaseRepresentation
bin1101011000101…
…1000110000100
310220122102110001
43112023012010
5103333104020
65323211044
71251134614
oct326130604
9126572401
1056144260
1129768017
1216976a84
13b829c73
147656a44
154de050a
hex358b184

56144260 has 12 divisors (see below), whose sum is σ = 117902988. Its totient is φ = 22457696.

The previous prime is 56144239. The next prime is 56144269. The reversal of 56144260 is 6244165.

It can be written as a sum of positive squares in 2 ways, for example, as 15618304 + 40525956 = 3952^2 + 6366^2 .

It is not an unprimeable number, because it can be changed into a prime (56144269) by changing a digit.

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, 1403587 + ... + 1403626.

It is an arithmetic number, because the mean of its divisors is an integer number (9825249).

Almost surely, 256144260 is an apocalyptic number.

It is an amenable number.

56144260 is an abundant number, since it is smaller than the sum of its proper divisors (61758728).

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

56144260 is a wasteful number, since it uses less digits than its factorization.

56144260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807222 (or 2807220 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 56144260 is about 7492.9473506758. The cubic root of 56144260 is about 382.9144780155.

It can be divided in two parts, 5 and 6144260, that added together give a triangular number (6144265 = T3505).

The spelling of 56144260 in words is "fifty-six million, one hundred forty-four thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 2807213 5614426 11228852 14036065 28072130 56144260