113520520 has 16 divisors (see below), whose sum is σ = 255421260. Its totient is φ = 45408192.

The previous prime is 113520493. The next prime is 113520527. The reversal of 113520520 is 25025311.

It can be written as a sum of positive squares in 2 ways, for example, as 109118916 + 4401604 = 10446^2 + 2098^2 .

It is a super-2 number, since 2×113520520² = 25773816922140800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113520527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418967 + ... + 1419046.

Almost surely, 2^113520520 is an apocalyptic number.

113520520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113520520 is an abundant number, since it is smaller than the sum of its proper divisors (141900740).

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

113520520 is a wasteful number, since it uses less digits than its factorization.

113520520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838024 (or 2838020 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 113520520 is about 10654.6008841251. The cubic root of 113520520 is about 484.2000061307.

Adding to 113520520 its reverse (25025311), we get a palindrome (138545831).

It can be divided in two parts, 11 and 3520520, that added together give a triangular number (3520531 = T₂₆₅₃).

The spelling of 113520520 in words is "one hundred thirteen million, five hundred twenty thousand, five hundred twenty".