18980976 has 80 divisors (see below), whose sum is σ = 59353344. Its totient is φ = 5102592.

The previous prime is 18980953. The next prime is 18980987. The reversal of 18980976 is 67908981.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4051 + ... + 7373.

Almost surely, 2^18980976 is an apocalyptic number.

18980976 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 18980976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29676672).

18980976 is an abundant number, since it is smaller than the sum of its proper divisors (40372368).

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

18980976 is a wasteful number, since it uses less digits than its factorization.

18980976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358 (or 3352 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 18980976 is about 4356.7161945667. The cubic root of 18980976 is about 266.7510760564.

The spelling of 18980976 in words is "eighteen million, nine hundred eighty thousand, nine hundred seventy-six".