113129280 has 168 divisors, whose sum is σ = 424610784. Its totient is φ = 27417600.

The previous prime is 113129279. The next prime is 113129297. The reversal of 113129280 is 82921311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29895 + ... + 33465.

Almost surely, 2^113129280 is an apocalyptic number.

113129280 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 113129280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212305392).

113129280 is an abundant number, since it is smaller than the sum of its proper divisors (311481504).

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

113129280 is a wasteful number, since it uses less digits than its factorization.

113129280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605 (or 3592 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 113129280 is about 10636.2248942000. The cubic root of 113129280 is about 483.6431128145.

The spelling of 113129280 in words is "one hundred thirteen million, one hundred twenty-nine thousand, two hundred eighty".