113439690 has 288 divisors, whose sum is σ = 396789120. Its totient is φ = 22674816.

The previous prime is 113439659. The next prime is 113439731. The reversal of 113439690 is 96934311.

113439690 = 2948² + 2949² + ... + 2960².

It is a super-2 number, since 2×113439690² = 25737126534592200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5970501 + ... + 5970519.

It is an arithmetic number, because the mean of its divisors is an integer number (1377740).

Almost surely, 2^113439690 is an apocalyptic number.

113439690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 113439690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198394560).

113439690 is an abundant number, since it is smaller than the sum of its proper divisors (283349430).

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

113439690 is an equidigital number, since it uses as much as digits as its factorization.

113439690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 113439690 is about 10650.8070116776. The cubic root of 113439690 is about 484.0850572231.

The spelling of 113439690 in words is "one hundred thirteen million, four hundred thirty-nine thousand, six hundred ninety".