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56143038 = 23710931223
BaseRepresentation
bin1101011000101…
…0110010111110
310220122100202210
43112022302332
5103333034123
65323201250
71251131220
oct326126276
9126570683
1056143038
1129767106
1216976226
13b829543
147656410
154ddee93
hex358acbe

56143038 has 32 divisors (see below), whose sum is σ = 128549376. Its totient is φ = 16013088.

The previous prime is 56143019. The next prime is 56143039. The reversal of 56143038 is 83034165.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 56142996 and 56143014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56143039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45295 + ... + 46517.

It is an arithmetic number, because the mean of its divisors is an integer number (4017168).

Almost surely, 256143038 is an apocalyptic number.

56143038 is an abundant number, since it is smaller than the sum of its proper divisors (72406338).

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

56143038 is a wasteful number, since it uses less digits than its factorization.

56143038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 56143038 is about 7492.8658068859. The cubic root of 56143038 is about 382.9116999049.

The spelling of 56143038 in words is "fifty-six million, one hundred forty-three thousand, thirty-eight".

Divisors: 1 2 3 6 7 14 21 42 1093 1223 2186 2446 3279 3669 6558 7338 7651 8561 15302 17122 22953 25683 45906 51366 1336739 2673478 4010217 8020434 9357173 18714346 28071519 56143038