22612993 has 4 divisors (see below), whose sum is σ = 24352468. Its totient is φ = 20873520.

The previous prime is 22612973. The next prime is 22612999. The reversal of 22612993 is 39921622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11370384 + 11242609 = 3372^2 + 3353^2 .

It is a cyclic number.

It is not a de Polignac number, because 22612993 - 2⁹ = 22612481 is a prime.

It is a super-2 number, since 2×22612993² = 1022694904836098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22612999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869718 + ... + 869743.

It is an arithmetic number, because the mean of its divisors is an integer number (6088117).

Almost surely, 2^22612993 is an apocalyptic number.

It is an amenable number.

22612993 is a deficient number, since it is larger than the sum of its proper divisors (1739475).

22612993 is a wasteful number, since it uses less digits than its factorization.

22612993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739474.

The product of its digits is 11664, while the sum is 34.

The square root of 22612993 is about 4755.3120822928. The cubic root of 22612993 is about 282.7825997082.

The spelling of 22612993 in words is "twenty-two million, six hundred twelve thousand, nine hundred ninety-three".