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56601830 = 2528120143
BaseRepresentation
bin1101011111101…
…0110011100110
310221111200010002
43113322303212
5103442224310
65341101302
71255051625
oct327726346
9127450102
1056601830
1129a4a87a
1216b57832
13b95a30c
1477356bc
154e80da5
hex35face6

56601830 has 16 divisors (see below), whose sum is σ = 102250944. Its totient is φ = 22559040.

The previous prime is 56601829. The next prime is 56601833. The reversal of 56601830 is 3810665.

It is a junction number, because it is equal to n+sod(n) for n = 56601793 and 56601802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56601833) 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, 7262 + ... + 12881.

It is an arithmetic number, because the mean of its divisors is an integer number (6390684).

Almost surely, 256601830 is an apocalyptic number.

56601830 is a deficient number, since it is larger than the sum of its proper divisors (45649114).

56601830 is a wasteful number, since it uses less digits than its factorization.

56601830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20431.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 56601830 is about 7523.4187707451. The cubic root of 56601830 is about 383.9519027939.

The spelling of 56601830 in words is "fifty-six million, six hundred one thousand, eight hundred thirty".

Divisors: 1 2 5 10 281 562 1405 2810 20143 40286 100715 201430 5660183 11320366 28300915 56601830