22155928 has 16 divisors (see below), whose sum is σ = 41819760. Its totient is φ = 11004000.

The previous prime is 22155911. The next prime is 22155943. The reversal of 22155928 is 82955122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22155893 and 22155902.

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, 7963 + ... + 10378.

It is an arithmetic number, because the mean of its divisors is an integer number (2613735).

Almost surely, 2^22155928 is an apocalyptic number.

It is an amenable number.

22155928 is a deficient number, since it is larger than the sum of its proper divisors (19663832).

22155928 is a wasteful number, since it uses less digits than its factorization.

22155928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18498 (or 18494 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 22155928 is about 4707.0083917495. The cubic root of 22155928 is about 280.8643697312.

The spelling of 22155928 in words is "twenty-two million, one hundred fifty-five thousand, nine hundred twenty-eight".