18828388 has 12 divisors (see below), whose sum is σ = 33651072. Its totient is φ = 9213800.

The previous prime is 18828371. The next prime is 18828391. The reversal of 18828388 is 88382881.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49888 + ... + 50263.

It is an arithmetic number, because the mean of its divisors is an integer number (2804256).

Almost surely, 2^18828388 is an apocalyptic number.

It is an amenable number.

18828388 is a deficient number, since it is larger than the sum of its proper divisors (14822684).

18828388 is a wasteful number, since it uses less digits than its factorization.

18828388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100202 (or 100200 counting only the distinct ones).

The product of its digits is 196608, while the sum is 46.

The square root of 18828388 is about 4339.1690448748. The cubic root of 18828388 is about 266.0343483637.

The spelling of 18828388 in words is "eighteen million, eight hundred twenty-eight thousand, three hundred eighty-eight".