113985840 has 40 divisors (see below), whose sum is σ = 353356848. Its totient is φ = 30396160.

The previous prime is 113985829. The next prime is 113985841. The reversal of 113985840 is 48589311.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (113985841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237231 + ... + 237710.

Almost surely, 2^113985840 is an apocalyptic number.

113985840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113985840 is an abundant number, since it is smaller than the sum of its proper divisors (239371008).

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

113985840 is a wasteful number, since it uses less digits than its factorization.

113985840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474957 (or 474951 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 113985840 is about 10676.4151286843. The cubic root of 113985840 is about 484.8606819880.

The spelling of 113985840 in words is "one hundred thirteen million, nine hundred eighty-five thousand, eight hundred forty".