11640442 has 24 divisors (see below), whose sum is σ = 19420128. Its totient is φ = 5228520.

The previous prime is 11640403. The next prime is 11640457. The reversal of 11640442 is 24404611.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24693 + ... + 25159.

It is an arithmetic number, because the mean of its divisors is an integer number (809172).

Almost surely, 2^11640442 is an apocalyptic number.

11640442 is a deficient number, since it is larger than the sum of its proper divisors (7779686).

11640442 is a wasteful number, since it uses less digits than its factorization.

11640442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 11640442 is about 3411.8091974787. The cubic root of 11640442 is about 226.6330049013.

The spelling of 11640442 in words is "eleven million, six hundred forty thousand, four hundred forty-two".