22978285 has 16 divisors (see below), whose sum is σ = 31053312. Its totient is φ = 16171200.

The previous prime is 22978259. The next prime is 22978313. The reversal of 22978285 is 58287922.

It is not a de Polignac number, because 22978285 - 2¹¹ = 22976237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5034 + ... + 8443.

It is an arithmetic number, because the mean of its divisors is an integer number (1940832).

Almost surely, 2^22978285 is an apocalyptic number.

It is an amenable number.

22978285 is a deficient number, since it is larger than the sum of its proper divisors (8075027).

22978285 is a wasteful number, since it uses less digits than its factorization.

22978285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13524.

The product of its digits is 161280, while the sum is 43.

The square root of 22978285 is about 4793.5670434448. The cubic root of 22978285 is about 284.2971704251.

The spelling of 22978285 in words is "twenty-two million, nine hundred seventy-eight thousand, two hundred eighty-five".