22613428 has 12 divisors (see below), whose sum is σ = 39795840. Its totient is φ = 11243192.

The previous prime is 22613419. The next prime is 22613431. The reversal of 22613428 is 82431622.

It is a super-2 number, since 2×22613428² = 1022734251822368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22613396 and 22613405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15076 + ... + 16507.

It is an arithmetic number, because the mean of its divisors is an integer number (3316320).

Almost surely, 2^22613428 is an apocalyptic number.

It is an amenable number.

22613428 is a deficient number, since it is larger than the sum of its proper divisors (17182412).

22613428 is a wasteful number, since it uses less digits than its factorization.

22613428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31766 (or 31764 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 22613428 is about 4755.3578203959. The cubic root of 22613428 is about 282.7844129672.

The spelling of 22613428 in words is "twenty-two million, six hundred thirteen thousand, four hundred twenty-eight".