18796428 has 144 divisors (see below), whose sum is σ = 59458560. Its totient is φ = 5027616.

The previous prime is 18796399. The next prime is 18796433. The reversal of 18796428 is 82469781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 399901 + ... + 399947.

Almost surely, 2^18796428 is an apocalyptic number.

18796428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18796428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29729280).

18796428 is an abundant number, since it is smaller than the sum of its proper divisors (40662132).

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

18796428 is a wasteful number, since it uses less digits than its factorization.

18796428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 82 counting only the distinct ones).

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

The square root of 18796428 is about 4335.4847479838. The cubic root of 18796428 is about 265.8837376102.

The spelling of 18796428 in words is "eighteen million, seven hundred ninety-six thousand, four hundred twenty-eight".