113087640 has 64 divisors (see below), whose sum is σ = 346498560. Its totient is φ = 29513600.

The previous prime is 113087629. The next prime is 113087641. The reversal of 113087640 is 46780311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 113087598 and 113087607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113087641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4386 + ... + 15665.

It is an arithmetic number, because the mean of its divisors is an integer number (5414040).

Almost surely, 2^113087640 is an apocalyptic number.

113087640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113087640 is an abundant number, since it is smaller than the sum of its proper divisors (233410920).

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

113087640 is a wasteful number, since it uses less digits than its factorization.

113087640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20112 (or 20108 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 113087640 is about 10634.2672526131. The cubic root of 113087640 is about 483.5837666382.

The spelling of 113087640 in words is "one hundred thirteen million, eighty-seven thousand, six hundred forty".