22729568 has 12 divisors (see below), whose sum is σ = 44748900. Its totient is φ = 11364768.

The previous prime is 22729547. The next prime is 22729601. The reversal of 22729568 is 86592722.

It is a super-2 number, since 2×22729568² = 1033266522933248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355118 + ... + 355181.

It is an arithmetic number, because the mean of its divisors is an integer number (3729075).

Almost surely, 2^22729568 is an apocalyptic number.

It is an amenable number.

22729568 is a deficient number, since it is larger than the sum of its proper divisors (22019332).

22729568 is an equidigital number, since it uses as much as digits as its factorization.

22729568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710309 (or 710301 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 22729568 is about 4767.5536703848. The cubic root of 22729568 is about 283.2677027533.

The spelling of 22729568 in words is "twenty-two million, seven hundred twenty-nine thousand, five hundred sixty-eight".