22970728 has 16 divisors (see below), whose sum is σ = 46985760. Its totient is φ = 10441200.

The previous prime is 22970713. The next prime is 22970737. The reversal of 22970728 is 82707922.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130428 + ... + 130603.

It is an arithmetic number, because the mean of its divisors is an integer number (2936610).

Almost surely, 2^22970728 is an apocalyptic number.

It is an amenable number.

22970728 is an abundant number, since it is smaller than the sum of its proper divisors (24015032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22970728 is a wasteful number, since it uses less digits than its factorization.

22970728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261048 (or 261044 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 22970728 is about 4792.7787347216. The cubic root of 22970728 is about 284.2660008624.

The spelling of 22970728 in words is "twenty-two million, nine hundred seventy thousand, seven hundred twenty-eight".