18974976 has 72 divisors (see below), whose sum is σ = 52195584. Its totient is φ = 6113280.

The previous prime is 18974953. The next prime is 18974983. The reversal of 18974976 is 67947981.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23410 + ... + 24206.

Almost surely, 2^18974976 is an apocalyptic number.

18974976 is a gapful number since it is divisible by the number (16) 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 18974976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26097792).

18974976 is an abundant number, since it is smaller than the sum of its proper divisors (33220608).

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

18974976 is an equidigital number, since it uses as much as digits as its factorization.

18974976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 833 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 18974976 is about 4356.0275481223. The cubic root of 18974976 is about 266.7229658909.

The spelling of 18974976 in words is "eighteen million, nine hundred seventy-four thousand, nine hundred seventy-six".