18728796 has 12 divisors (see below), whose sum is σ = 43700552. Its totient is φ = 6242928.

The previous prime is 18728791. The next prime is 18728797. The reversal of 18728796 is 69782781.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18728791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780355 + ... + 780378.

Almost surely, 2^18728796 is an apocalyptic number.

It is an amenable number.

18728796 is an abundant number, since it is smaller than the sum of its proper divisors (24971756).

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

18728796 is a wasteful number, since it uses less digits than its factorization.

18728796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560740 (or 1560738 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 18728796 is about 4327.6778992896. The cubic root of 18728796 is about 265.5644595777.

The spelling of 18728796 in words is "eighteen million, seven hundred twenty-eight thousand, seven hundred ninety-six".