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56386580 = 2252819329
BaseRepresentation
bin1101011100011…
…0010000010100
310221002201211212
43113012100110
5103413332310
65332320552
71253164235
oct327062024
9127081755
1056386580
1129913088
1216a73158
13b8b3353
1476bb08c
154e3c205
hex35c6414

56386580 has 12 divisors (see below), whose sum is σ = 118411860. Its totient is φ = 22554624.

The previous prime is 56386579. The next prime is 56386607. The reversal of 56386580 is 8568365.

It can be written as a sum of positive squares in 2 ways, for example, as 14032516 + 42354064 = 3746^2 + 6508^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 1409645 + ... + 1409684.

It is an arithmetic number, because the mean of its divisors is an integer number (9867655).

Almost surely, 256386580 is an apocalyptic number.

It is an amenable number.

56386580 is an abundant number, since it is smaller than the sum of its proper divisors (62025280).

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

56386580 is a wasteful number, since it uses less digits than its factorization.

56386580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819338 (or 2819336 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 56386580 is about 7509.0998128937. The cubic root of 56386580 is about 383.4645767786.

The spelling of 56386580 in words is "fifty-six million, three hundred eighty-six thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 2819329 5638658 11277316 14096645 28193290 56386580