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56028967 = 1919714969
BaseRepresentation
bin1101010110111…
…0111100100111
310220102120021221
43111232330213
5103320411332
65320521211
71250144521
oct325567447
9126376257
1056028967
1129699435
1216920207
13b7b9647
147626a11
154dbb297
hex356ef27

56028967 has 8 divisors (see below), whose sum is σ = 59281200. Its totient is φ = 52807104.

The previous prime is 56028961. The next prime is 56028977. The reversal of 56028967 is 76982065.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 6-Lehmer number, since φ(56028967) divides (56028967-1)6.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-56028967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56028961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3742 + ... + 11227.

It is an arithmetic number, because the mean of its divisors is an integer number (7410150).

Almost surely, 256028967 is an apocalyptic number.

56028967 is the 3743-rd decagonal number.

56028967 is a deficient number, since it is larger than the sum of its proper divisors (3252233).

56028967 is a wasteful number, since it uses less digits than its factorization.

56028967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15185.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 56028967 is about 7485.2499624261. The cubic root of 56028967 is about 382.6521917045.

The spelling of 56028967 in words is "fifty-six million, twenty-eight thousand, nine hundred sixty-seven".

Divisors: 1 19 197 3743 14969 284411 2948893 56028967