113128408 has 16 divisors (see below), whose sum is σ = 212902560. Its totient is φ = 56354400.

The previous prime is 113128373. The next prime is 113128409. The reversal of 113128408 is 804821311.

It is a super-2 number, since 2×113128408² = 25596073393228928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113128409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23923 + ... + 28258.

It is an arithmetic number, because the mean of its divisors is an integer number (13306410).

Almost surely, 2^113128408 is an apocalyptic number.

It is an amenable number.

113128408 is a deficient number, since it is larger than the sum of its proper divisors (99774152).

113128408 is a wasteful number, since it uses less digits than its factorization.

113128408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52458 (or 52454 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 113128408 is about 10636.1839021333. The cubic root of 113128408 is about 483.6418701717.

Adding to 113128408 its reverse (804821311), we get a palindrome (917949719).

The spelling of 113128408 in words is "one hundred thirteen million, one hundred twenty-eight thousand, four hundred eight".