18628842 has 24 divisors (see below), whose sum is σ = 38209248. Its totient is φ = 6054880.

The previous prime is 18628823. The next prime is 18628853. The reversal of 18628842 is 24882681.

It is a self number, because there is not a number n which added to its sum of digits gives 18628842.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9163 + ... + 11009.

It is an arithmetic number, because the mean of its divisors is an integer number (1592052).

Almost surely, 2^18628842 is an apocalyptic number.

18628842 is an abundant number, since it is smaller than the sum of its proper divisors (19580406).

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

18628842 is a wasteful number, since it uses less digits than its factorization.

18628842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1893 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 18628842 is about 4316.1142246238. The cubic root of 18628842 is about 265.0911849487.

The spelling of 18628842 in words is "eighteen million, six hundred twenty-eight thousand, eight hundred forty-two".