22428478 has 8 divisors (see below), whose sum is σ = 33693480. Its totient is φ = 11197320.

The previous prime is 22428467. The next prime is 22428481. The reversal of 22428478 is 87482422.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6733 + ... + 9496.

It is an arithmetic number, because the mean of its divisors is an integer number (4211685).

Almost surely, 2^22428478 is an apocalyptic number.

22428478 is a deficient number, since it is larger than the sum of its proper divisors (11265002).

22428478 is a wasteful number, since it uses less digits than its factorization.

22428478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16922.

The product of its digits is 57344, while the sum is 37.

The square root of 22428478 is about 4735.8714087272. The cubic root of 22428478 is about 282.0113587967.

The spelling of 22428478 in words is "twenty-two million, four hundred twenty-eight thousand, four hundred seventy-eight".