113487220 has 48 divisors (see below), whose sum is σ = 297134208. Its totient is φ = 35372160.

The previous prime is 113487217. The next prime is 113487233. The reversal of 113487220 is 22784311.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35307 + ... + 38386.

It is an arithmetic number, because the mean of its divisors is an integer number (6190296).

Almost surely, 2^113487220 is an apocalyptic number.

113487220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113487220 is an abundant number, since it is smaller than the sum of its proper divisors (183646988).

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

113487220 is a wasteful number, since it uses less digits than its factorization.

113487220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73720 (or 73718 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 113487220 is about 10653.0380643270. The cubic root of 113487220 is about 484.1526565794.

The spelling of 113487220 in words is "one hundred thirteen million, four hundred eighty-seven thousand, two hundred twenty".