11639672 has 32 divisors (see below), whose sum is σ = 24634800. Its totient is φ = 5107200.

The previous prime is 11639659. The next prime is 11639681. The reversal of 11639672 is 27693611.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272 + ... + 4832.

Almost surely, 2^11639672 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 11639672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12317400).

11639672 is an abundant number, since it is smaller than the sum of its proper divisors (12995128).

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

11639672 is a wasteful number, since it uses less digits than its factorization.

11639672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607 (or 4603 counting only the distinct ones).

The product of its digits is 13608, while the sum is 35.

The square root of 11639672 is about 3411.6963522565. The cubic root of 11639672 is about 226.6280076322.

The spelling of 11639672 in words is "eleven million, six hundred thirty-nine thousand, six hundred seventy-two".