11618904 has 48 divisors (see below), whose sum is σ = 31935960. Its totient is φ = 3520000.

The previous prime is 11618903. The next prime is 11618909. The reversal of 11618904 is 40981611.

It is a super-2 number, since 2×11618904² = 269997860322432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11618903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 904 + ... + 4904.

Almost surely, 2^11618904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11618904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15967980).

11618904 is an abundant number, since it is smaller than the sum of its proper divisors (20317056).

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

11618904 is a wasteful number, since it uses less digits than its factorization.

11618904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032 (or 4017 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 11618904 is about 3408.6513462072. The cubic root of 11618904 is about 226.4931409313.

The spelling of 11618904 in words is "eleven million, six hundred eighteen thousand, nine hundred four".