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113707881 = 347228649
BaseRepresentation
bin1101100011100…
…00101101101001
321220221221220000
412301300231221
5213102123011
615141053213
72550333600
oct661605551
9256857800
10113707881
1159204461
12320b7209
131a732c91
141115ca37
159eb1356
hex6c70b69

113707881 has 30 divisors (see below), whose sum is σ = 197599050. Its totient is φ = 64973664.

The previous prime is 113707879. The next prime is 113707901. The reversal of 113707881 is 188707311.

It can be written as a sum of positive squares in only one way, i.e., 95355225 + 18352656 = 9765^2 + 4284^2 .

It is not a de Polignac number, because 113707881 - 21 = 113707879 is a prime.

It is a super-2 number, since 2×1137078812 = 25858964403020322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113707831) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 10356 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (6586635).

Almost surely, 2113707881 is an apocalyptic number.

It is an amenable number.

113707881 is a deficient number, since it is larger than the sum of its proper divisors (83891169).

113707881 is an equidigital number, since it uses as much as digits as its factorization.

113707881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28675 (or 28659 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 36.

The square root of 113707881 is about 10663.3897518566. The cubic root of 113707881 is about 484.4662438501.

The spelling of 113707881 in words is "one hundred thirteen million, seven hundred seven thousand, eight hundred eighty-one".

Divisors: 1 3 7 9 21 27 49 63 81 147 189 441 567 1323 3969 28649 85947 200543 257841 601629 773523 1403801 1804887 2320569 4211403 5414661 12634209 16243983 37902627 113707881