11864720 has 40 divisors (see below), whose sum is σ = 31527744. Its totient is φ = 4067712.

The previous prime is 11864717. The next prime is 11864737. The reversal of 11864720 is 2746811.

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

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, 10034 + ... + 11153.

Almost surely, 2^11864720 is an apocalyptic number.

11864720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11864720 is an abundant number, since it is smaller than the sum of its proper divisors (19663024).

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

11864720 is a wasteful number, since it uses less digits than its factorization.

11864720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21207 (or 21201 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 11864720 is about 3444.5202859034. The cubic root of 11864720 is about 228.0792788837.

The spelling of 11864720 in words is "eleven million, eight hundred sixty-four thousand, seven hundred twenty".