113646640 has 20 divisors (see below), whose sum is σ = 264228624. Its totient is φ = 45458624.

The previous prime is 113646613. The next prime is 113646653. The reversal of 113646640 is 46646311.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 710212 + ... + 710371.

Almost surely, 2^113646640 is an apocalyptic number.

113646640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113646640 is an abundant number, since it is smaller than the sum of its proper divisors (150581984).

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

113646640 is a wasteful number, since it uses less digits than its factorization.

113646640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420596 (or 1420590 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 113646640 is about 10660.5178110634. The cubic root of 113646640 is about 484.3792533237.

The spelling of 113646640 in words is "one hundred thirteen million, six hundred forty-six thousand, six hundred forty".