22273564 has 6 divisors (see below), whose sum is σ = 38978744. Its totient is φ = 11136780.

The previous prime is 22273561. The next prime is 22273571. The reversal of 22273564 is 46537222.

It is a super-2 number, since 2×22273564² = 992223306524192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22273561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2784192 + ... + 2784199.

Almost surely, 2^22273564 is an apocalyptic number.

It is an amenable number.

22273564 is a deficient number, since it is larger than the sum of its proper divisors (16705180).

22273564 is a wasteful number, since it uses less digits than its factorization.

22273564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5568395 (or 5568393 counting only the distinct ones).

The product of its digits is 20160, while the sum is 31.

The square root of 22273564 is about 4719.4876840606. The cubic root of 22273564 is about 281.3605718981.

The spelling of 22273564 in words is "twenty-two million, two hundred seventy-three thousand, five hundred sixty-four".