22064004 has 18 divisors (see below), whose sum is σ = 55772990. Its totient is φ = 7354656.

The previous prime is 22063999. The next prime is 22064017. The reversal of 22064004 is 40046022.

22064004 is a `hidden beast` number, since 2 + 20 + 640 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21902400 + 161604 = 4680^2 + 402^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306409 + ... + 306480.

Almost surely, 2^22064004 is an apocalyptic number.

It is an amenable number.

22064004 is an abundant number, since it is smaller than the sum of its proper divisors (33708986).

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

22064004 is a wasteful number, since it uses less digits than its factorization.

22064004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612899 (or 612894 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22064004 is about 4697.2336539712. The cubic root of 22064004 is about 280.4753998654.

The spelling of 22064004 in words is "twenty-two million, sixty-four thousand, four".