112991520 has 192 divisors, whose sum is σ = 384725376. Its totient is φ = 27770880.

The previous prime is 112991513. The next prime is 112991539. The reversal of 112991520 is 25199211.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497647 + ... + 497873.

It is an arithmetic number, because the mean of its divisors is an integer number (2003778).

Almost surely, 2^112991520 is an apocalyptic number.

112991520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112991520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192362688).

112991520 is an abundant number, since it is smaller than the sum of its proper divisors (271733856).

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

112991520 is a wasteful number, since it uses less digits than its factorization.

112991520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 112991520 is about 10629.7469396030. The cubic root of 112991520 is about 483.4467188077.

The spelling of 112991520 in words is "one hundred twelve million, nine hundred ninety-one thousand, five hundred twenty".