11642864 has 40 divisors (see below), whose sum is σ = 23578848. Its totient is φ = 5564160.

The previous prime is 11642863. The next prime is 11642879. The reversal of 11642864 is 46824611.

It is a self number, because there is not a number n which added to its sum of digits gives 11642864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11642863) 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, 41894 + ... + 42170.

Almost surely, 2^11642864 is an apocalyptic number.

It is an amenable number.

11642864 is an abundant number, since it is smaller than the sum of its proper divisors (11935984).

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

11642864 is a wasteful number, since it uses less digits than its factorization.

11642864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 387 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 11642864 is about 3412.1641226647. The cubic root of 11642864 is about 226.6487221473.

The spelling of 11642864 in words is "eleven million, six hundred forty-two thousand, eight hundred sixty-four".