22613972 has 6 divisors (see below), whose sum is σ = 39574458. Its totient is φ = 11306984.

The previous prime is 22613963. The next prime is 22613989. The reversal of 22613972 is 27931622.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22600516 + 13456 = 4754^2 + 116^2 .

It is a super-2 number, since 2×22613972² = 1022783459233568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2826743 + ... + 2826750.

It is an arithmetic number, because the mean of its divisors is an integer number (6595743).

Almost surely, 2^22613972 is an apocalyptic number.

It is an amenable number.

22613972 is a deficient number, since it is larger than the sum of its proper divisors (16960486).

22613972 is a wasteful number, since it uses less digits than its factorization.

22613972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653497 (or 5653495 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 22613972 is about 4755.4150186918. The cubic root of 22613972 is about 282.7866805504.

The spelling of 22613972 in words is "twenty-two million, six hundred thirteen thousand, nine hundred seventy-two".