11864172 has 12 divisors (see below), whose sum is σ = 27683096. Its totient is φ = 3954720.

The previous prime is 11864131. The next prime is 11864183. The reversal of 11864172 is 27146811.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494329 + ... + 494352.

Almost surely, 2^11864172 is an apocalyptic number.

11864172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11864172 is an abundant number, since it is smaller than the sum of its proper divisors (15818924).

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

11864172 is a wasteful number, since it uses less digits than its factorization.

11864172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988688 (or 988686 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 11864172 is about 3444.4407383493. The cubic root of 11864172 is about 228.0757673703.

The spelling of 11864172 in words is "eleven million, eight hundred sixty-four thousand, one hundred seventy-two".