22471664 has 10 divisors (see below), whose sum is σ = 43538880. Its totient is φ = 11235824.

The previous prime is 22471643. The next prime is 22471679. The reversal of 22471664 is 46617422.

It is a self number, because there is not a number n which added to its sum of digits gives 22471664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702224 + ... + 702255.

It is an arithmetic number, because the mean of its divisors is an integer number (4353888).

Almost surely, 2^22471664 is an apocalyptic number.

It is an amenable number.

22471664 is a deficient number, since it is larger than the sum of its proper divisors (21067216).

22471664 is a wasteful number, since it uses less digits than its factorization.

22471664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404487 (or 1404481 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 22471664 is about 4740.4286725991. The cubic root of 22471664 is about 282.1922468927.

The spelling of 22471664 in words is "twenty-two million, four hundred seventy-one thousand, six hundred sixty-four".