18725828 has 24 divisors (see below), whose sum is σ = 35936544. Its totient is φ = 8467200.

The previous prime is 18725821. The next prime is 18725893. The reversal of 18725828 is 82852781.

It is not an unprimeable number, because it can be changed into a prime (18725821) 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, 8276 + ... + 10292.

It is an arithmetic number, because the mean of its divisors is an integer number (1497356).

Almost surely, 2^18725828 is an apocalyptic number.

It is an amenable number.

18725828 is a deficient number, since it is larger than the sum of its proper divisors (17210716).

18725828 is a wasteful number, since it uses less digits than its factorization.

18725828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243 (or 2241 counting only the distinct ones).

The product of its digits is 71680, while the sum is 41.

The square root of 18725828 is about 4327.3349766340. The cubic root of 18725828 is about 265.5504306112.

The spelling of 18725828 in words is "eighteen million, seven hundred twenty-five thousand, eight hundred twenty-eight".