113018640 has 80 divisors (see below), whose sum is σ = 400414848. Its totient is φ = 25832448.

The previous prime is 113018621. The next prime is 113018641. The reversal of 113018640 is 46810311.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 113018640.

It is not an unprimeable number, because it can be changed into a prime (113018641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31957 + ... + 35316.

Almost surely, 2^113018640 is an apocalyptic number.

113018640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113018640 is an abundant number, since it is smaller than the sum of its proper divisors (287396208).

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

113018640 is a wasteful number, since it uses less digits than its factorization.

113018640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67296 (or 67290 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 113018640 is about 10631.0225284306. The cubic root of 113018640 is about 483.4853943537.

Adding to 113018640 its reverse (46810311), we get a palindrome (159828951).

The spelling of 113018640 in words is "one hundred thirteen million, eighteen thousand, six hundred forty".