22785494 has 16 divisors (see below), whose sum is σ = 35065968. Its totient is φ = 11100672.

The previous prime is 22785493. The next prime is 22785509. The reversal of 22785494 is 49458722.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22785493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12122 + ... + 13874.

It is an arithmetic number, because the mean of its divisors is an integer number (2191623).

Almost surely, 2^22785494 is an apocalyptic number.

22785494 is a deficient number, since it is larger than the sum of its proper divisors (12280474).

22785494 is a wasteful number, since it uses less digits than its factorization.

22785494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919.

The product of its digits is 161280, while the sum is 41.

The square root of 22785494 is about 4773.4153391466. The cubic root of 22785494 is about 283.4998387710.

The spelling of 22785494 in words is "twenty-two million, seven hundred eighty-five thousand, four hundred ninety-four".