22491464 has 16 divisors (see below), whose sum is σ = 42359100. Its totient is φ = 11195712.

The previous prime is 22491439. The next prime is 22491473. The reversal of 22491464 is 46419422.

It can be written as a sum of positive squares in 2 ways, for example, as 22486564 + 4900 = 4742^2 + 70^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22491464.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4307 + ... + 7970.

Almost surely, 2^22491464 is an apocalyptic number.

It is an amenable number.

22491464 is a deficient number, since it is larger than the sum of its proper divisors (19867636).

22491464 is a wasteful number, since it uses less digits than its factorization.

22491464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12512 (or 12508 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 22491464 is about 4742.5166314943. The cubic root of 22491464 is about 282.2751033329.

The spelling of 22491464 in words is "twenty-two million, four hundred ninety-one thousand, four hundred sixty-four".