18825772 has 12 divisors (see below), whose sum is σ = 37651600. Its totient is φ = 8068176.

The previous prime is 18825769. The next prime is 18825797. The reversal of 18825772 is 27752881.

18825772 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336147 + ... + 336202.

Almost surely, 2^18825772 is an apocalyptic number.

It is an amenable number.

18825772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18825772 is a wasteful number, since it uses less digits than its factorization.

18825772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672360 (or 672358 counting only the distinct ones).

The product of its digits is 62720, while the sum is 40.

The square root of 18825772 is about 4338.8675942001. The cubic root of 18825772 is about 266.0220269320.

The spelling of 18825772 in words is "eighteen million, eight hundred twenty-five thousand, seven hundred seventy-two".