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47638038 = 2371134239
BaseRepresentation
bin1011010110111…
…0011000010110
310022122021002210
42311232120112
544143404123
64421014250
71115626260
oct265563026
9108567083
1047638038
1124988188
1213b54386
139b3c2b6
146480b30
1542aee93
hex2d6e616

47638038 has 16 divisors (see below), whose sum is σ = 108887040. Its totient is φ = 13610856.

The previous prime is 47638021. The next prime is 47638049. The reversal of 47638038 is 83083674.

It is a junction number, because it is equal to n+sod(n) for n = 47637987 and 47638005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567078 + ... + 567161.

It is an arithmetic number, because the mean of its divisors is an integer number (6805440).

Almost surely, 247638038 is an apocalyptic number.

47638038 is an abundant number, since it is smaller than the sum of its proper divisors (61249002).

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

47638038 is a wasteful number, since it uses less digits than its factorization.

47638038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134251.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 47638038 is about 6902.0314400907. The cubic root of 47638038 is about 362.5083007215.

The spelling of 47638038 in words is "forty-seven million, six hundred thirty-eight thousand, thirty-eight".

Divisors: 1 2 3 6 7 14 21 42 1134239 2268478 3402717 6805434 7939673 15879346 23819019 47638038