11213904 has 40 divisors (see below), whose sum is σ = 31199392. Its totient is φ = 3450240.

The previous prime is 11213843. The next prime is 11213957. The reversal of 11213904 is 40931211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8362 + ... + 9609.

Almost surely, 2^11213904 is an apocalyptic number.

It is an amenable number.

11213904 is an abundant number, since it is smaller than the sum of its proper divisors (19985488).

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

11213904 is a wasteful number, since it uses less digits than its factorization.

11213904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17995 (or 17989 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 11213904 is about 3348.7167691520. The cubic root of 11213904 is about 223.8303349579.

The spelling of 11213904 in words is "eleven million, two hundred thirteen thousand, nine hundred four".