113587840 has 32 divisors (see below), whose sum is σ = 271547460. Its totient is φ = 45434880.

The previous prime is 113587783. The next prime is 113587843. The reversal of 113587840 is 48785311.

It can be written as a sum of positive squares in 2 ways, for example, as 113379904 + 207936 = 10648^2 + 456^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 113587840.

It is not an unprimeable number, because it can be changed into a prime (113587843) by changing a digit.

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, 88101 + ... + 89380.

Almost surely, 2^113587840 is an apocalyptic number.

113587840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113587840 is an abundant number, since it is smaller than the sum of its proper divisors (157959620).

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

113587840 is an equidigital number, since it uses as much as digits as its factorization.

113587840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177500 (or 177488 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 113587840 is about 10657.7596144781. The cubic root of 113587840 is about 484.2957007331.

The spelling of 113587840 in words is "one hundred thirteen million, five hundred eighty-seven thousand, eight hundred forty".