18628794 has 24 divisors (see below), whose sum is σ = 40458132. Its totient is φ = 6194880.

The previous prime is 18628783. The next prime is 18628823. The reversal of 18628794 is 49782681.

18628794 is a `hidden beast` number, since 18 + 628 + 7 + 9 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18173169 + 455625 = 4263^2 + 675^2 .

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, 8782 + ... + 10694.

Almost surely, 2^18628794 is an apocalyptic number.

18628794 is an abundant number, since it is smaller than the sum of its proper divisors (21829338).

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

18628794 is a wasteful number, since it uses less digits than its factorization.

18628794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462 (or 2459 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 18628794 is about 4316.1086640630. The cubic root of 18628794 is about 265.0909572661.

The spelling of 18628794 in words is "eighteen million, six hundred twenty-eight thousand, seven hundred ninety-four".