22729556 has 12 divisors (see below), whose sum is σ = 39936960. Its totient is φ = 11319000.

The previous prime is 22729547. The next prime is 22729601. The reversal of 22729556 is 65592722.

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 in 3 ways as a sum of consecutive naturals, for example, 10316 + ... + 12323.

It is an arithmetic number, because the mean of its divisors is an integer number (3328080).

Almost surely, 2^22729556 is an apocalyptic number.

It is an amenable number.

22729556 is a deficient number, since it is larger than the sum of its proper divisors (17207404).

22729556 is a wasteful number, since it uses less digits than its factorization.

22729556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22894 (or 22892 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 22729556 is about 4767.5524118776. The cubic root of 22729556 is about 283.2676529032.

The spelling of 22729556 in words is "twenty-two million, seven hundred twenty-nine thousand, five hundred fifty-six".