22782975 has 48 divisors (see below), whose sum is σ = 40497408. Its totient is φ = 11261440.

The previous prime is 22782967. The next prime is 22782983. The reversal of 22782975 is 57928722.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22782967) and next prime (22782983).

It is not a de Polignac number, because 22782975 - 2³ = 22782967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136342 + ... + 136508.

It is an arithmetic number, because the mean of its divisors is an integer number (843696).

Almost surely, 2^22782975 is an apocalyptic number.

22782975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22782975 is a deficient number, since it is larger than the sum of its proper divisors (17714433).

22782975 is a wasteful number, since it uses less digits than its factorization.

22782975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 299 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 22782975 is about 4773.1514746549. The cubic root of 22782975 is about 283.4893911530.

It can be divided in two parts, 2278 and 2975, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 22782975 in words is "twenty-two million, seven hundred eighty-two thousand, nine hundred seventy-five".