22871978 has 16 divisors (see below), whose sum is σ = 34939296. Its totient is φ = 11227440.

The previous prime is 22871971. The next prime is 22871983. The reversal of 22871978 is 87917822.

It is not an unprimeable number, because it can be changed into a prime (22871971) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 34700 + ... + 35352.

It is an arithmetic number, because the mean of its divisors is an integer number (2183706).

Almost surely, 2^22871978 is an apocalyptic number.

22871978 is a deficient number, since it is larger than the sum of its proper divisors (12067318).

22871978 is a wasteful number, since it uses less digits than its factorization.

22871978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949.

The product of its digits is 112896, while the sum is 44.

The square root of 22871978 is about 4782.4656820515. The cubic root of 22871978 is about 283.8580673454.

The spelling of 22871978 in words is "twenty-two million, eight hundred seventy-one thousand, nine hundred seventy-eight".