22972478 has 8 divisors (see below), whose sum is σ = 35023800. Its totient is φ = 11297880.

The previous prime is 22972451. The next prime is 22972487. The reversal of 22972478 is 87427922.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 94028 + ... + 94271.

It is an arithmetic number, because the mean of its divisors is an integer number (4377975).

Almost surely, 2^22972478 is an apocalyptic number.

22972478 is a deficient number, since it is larger than the sum of its proper divisors (12051322).

22972478 is a wasteful number, since it uses less digits than its factorization.

22972478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188362.

The product of its digits is 112896, while the sum is 41.

The square root of 22972478 is about 4792.9612975696. The cubic root of 22972478 is about 284.2732195114.

The spelling of 22972478 in words is "twenty-two million, nine hundred seventy-two thousand, four hundred seventy-eight".