22697128 has 8 divisors (see below), whose sum is σ = 42557130. Its totient is φ = 11348560.

The previous prime is 22697117. The next prime is 22697141. The reversal of 22697128 is 82179622.

It can be written as a sum of positive squares in only one way, i.e., 22638564 + 58564 = 4758^2 + 242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1418563 + ... + 1418578.

Almost surely, 2^22697128 is an apocalyptic number.

It is an amenable number.

22697128 is a deficient number, since it is larger than the sum of its proper divisors (19860002).

22697128 is a wasteful number, since it uses less digits than its factorization.

22697128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837147 (or 2837143 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 22697128 is about 4764.1502915000. The cubic root of 22697128 is about 283.1328772050.

The spelling of 22697128 in words is "twenty-two million, six hundred ninety-seven thousand, one hundred twenty-eight".