18628008 has 32 divisors (see below), whose sum is σ = 53223360. Its totient is φ = 5322240.

The previous prime is 18628003. The next prime is 18628013. The reversal of 18628008 is 80082681.

It is an interprime number because it is at equal distance from previous prime (18628003) and next prime (18628013).

It is a self number, because there is not a number n which added to its sum of digits gives 18628008.

It is not an unprimeable number, because it can be changed into a prime (18628003) 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, 55273 + ... + 55608.

It is an arithmetic number, because the mean of its divisors is an integer number (1663230).

Almost surely, 2^18628008 is an apocalyptic number.

It is an amenable number.

18628008 is an abundant number, since it is smaller than the sum of its proper divisors (34595352).

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

18628008 is a wasteful number, since it uses less digits than its factorization.

18628008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110897 (or 110893 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 18628008 is about 4316.0176088612. The cubic root of 18628008 is about 265.0872289084.

It can be divided in two parts, 1862 and 8008, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 18628008 in words is "eighteen million, six hundred twenty-eight thousand, eight".