113512640 has 28 divisors (see below), whose sum is σ = 270302736. Its totient is φ = 45404928.

The previous prime is 113512639. The next prime is 113512649. The reversal of 113512640 is 46215311.

It is not an unprimeable number, because it can be changed into a prime (113512649) 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, 177044 + ... + 177683.

Almost surely, 2^113512640 is an apocalyptic number.

113512640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113512640 is an abundant number, since it is smaller than the sum of its proper divisors (156790096).

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

113512640 is an equidigital number, since it uses as much as digits as its factorization.

113512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354744 (or 354734 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 113512640 is about 10654.2310844096. The cubic root of 113512640 is about 484.1888023285.

Adding to 113512640 its reverse (46215311), we get a palindrome (159727951).

The spelling of 113512640 in words is "one hundred thirteen million, five hundred twelve thousand, six hundred forty".