22042864 has 10 divisors (see below), whose sum is σ = 42708080. Its totient is φ = 11021424.

The previous prime is 22042849. The next prime is 22042879. The reversal of 22042864 is 46824022.

It is an interprime number because it is at equal distance from previous prime (22042849) and next prime (22042879).

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, 688824 + ... + 688855.

It is an arithmetic number, because the mean of its divisors is an integer number (4270808).

Almost surely, 2^22042864 is an apocalyptic number.

It is an amenable number.

22042864 is a deficient number, since it is larger than the sum of its proper divisors (20665216).

22042864 is a wasteful number, since it uses less digits than its factorization.

22042864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377687 (or 1377681 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 22042864 is about 4694.9828540688. The cubic root of 22042864 is about 280.3857947237.

Adding to 22042864 its reverse (46824022), we get a palindrome (68866886).

The spelling of 22042864 in words is "twenty-two million, forty-two thousand, eight hundred sixty-four".