18628942 has 8 divisors (see below), whose sum is σ = 29158416. Its totient is φ = 8909472.

The previous prime is 18628937. The next prime is 18628993. The reversal of 18628942 is 24982681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18628895 and 18628904.

It is a congruent number.

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, 202443 + ... + 202534.

It is an arithmetic number, because the mean of its divisors is an integer number (3644802).

Almost surely, 2^18628942 is an apocalyptic number.

18628942 is a deficient number, since it is larger than the sum of its proper divisors (10529474).

18628942 is a wasteful number, since it uses less digits than its factorization.

18628942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405002.

The product of its digits is 55296, while the sum is 40.

The square root of 18628942 is about 4316.1258091024. The cubic root of 18628942 is about 265.0916592861.

The spelling of 18628942 in words is "eighteen million, six hundred twenty-eight thousand, nine hundred forty-two".