11638974 has 16 divisors (see below), whose sum is σ = 23597712. Its totient is φ = 3826368.

The previous prime is 11638973. The next prime is 11638993. The reversal of 11638974 is 47983611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11638973) by changing a digit.

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, 12849 + ... + 13724.

It is an arithmetic number, because the mean of its divisors is an integer number (1474857).

Almost surely, 2^11638974 is an apocalyptic number.

11638974 is an abundant number, since it is smaller than the sum of its proper divisors (11958738).

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

11638974 is a wasteful number, since it uses less digits than its factorization.

11638974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26651.

The product of its digits is 36288, while the sum is 39.

The square root of 11638974 is about 3411.5940555699. The cubic root of 11638974 is about 226.6234774498.

The spelling of 11638974 in words is "eleven million, six hundred thirty-eight thousand, nine hundred seventy-four".