22870518 has 32 divisors (see below), whose sum is σ = 50181120. Its totient is φ = 6891360.

The previous prime is 22870511. The next prime is 22870537. The reversal of 22870518 is 81507822.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22870511) 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 15 ways as a sum of consecutive naturals, for example, 12123 + ... + 13881.

It is an arithmetic number, because the mean of its divisors is an integer number (1568160).

Almost surely, 2^22870518 is an apocalyptic number.

22870518 is an abundant number, since it is smaller than the sum of its proper divisors (27310602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22870518 is a wasteful number, since it uses less digits than its factorization.

22870518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 22870518 is about 4782.3130386875. The cubic root of 22870518 is about 283.8520273256.

It can be divided in two parts, 22 and 870518, that added together give a triangular number (870540 = T₁₃₁₉).

The spelling of 22870518 in words is "twenty-two million, eight hundred seventy thousand, five hundred eighteen".