113857840 has 40 divisors (see below), whose sum is σ = 280294560. Its totient is φ = 42863616.

The previous prime is 113857837. The next prime is 113857847. The reversal of 113857840 is 48758311.

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

It is a self number, because there is not a number n which added to its sum of digits gives 113857840.

It is not an unprimeable number, because it can be changed into a prime (113857847) 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, 40500 + ... + 43219.

It is an arithmetic number, because the mean of its divisors is an integer number (7007364).

Almost surely, 2^113857840 is an apocalyptic number.

113857840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113857840 is an abundant number, since it is smaller than the sum of its proper divisors (166436720).

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

113857840 is a wasteful number, since it uses less digits than its factorization.

113857840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83749 (or 83743 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 113857840 is about 10670.4189233600. The cubic root of 113857840 is about 484.6791231422.

The spelling of 113857840 in words is "one hundred thirteen million, eight hundred fifty-seven thousand, eight hundred forty".