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56638383 = 367281783
BaseRepresentation
bin1101100000001…
…1101110101111
310221120112020220
43120003232233
5103444412013
65341542423
71255263324
oct330035657
9127515226
1056638383
1129a7528a
1216b74a13
13b970b49
147744b4b
154e8bb23
hex3603baf

56638383 has 8 divisors (see below), whose sum is σ = 76645248. Its totient is φ = 37195224.

The previous prime is 56638369. The next prime is 56638427. The reversal of 56638383 is 38383665.

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

It is not a de Polignac number, because 56638383 - 24 = 56638367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56631383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140691 + ... + 141092.

It is an arithmetic number, because the mean of its divisors is an integer number (9580656).

Almost surely, 256638383 is an apocalyptic number.

56638383 is a deficient number, since it is larger than the sum of its proper divisors (20006865).

56638383 is a wasteful number, since it uses less digits than its factorization.

56638383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281853.

The product of its digits is 311040, while the sum is 42.

The square root of 56638383 is about 7525.8476598985. The cubic root of 56638383 is about 384.0345360106.

The spelling of 56638383 in words is "fifty-six million, six hundred thirty-eight thousand, three hundred eighty-three".

Divisors: 1 3 67 201 281783 845349 18879461 56638383