18730976 has 48 divisors (see below), whose sum is σ = 40642560. Its totient is φ = 8426880.

The previous prime is 18730961. The next prime is 18730981. The reversal of 18730976 is 67903781.

It is a congruent number.

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, 44495 + ... + 44913.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^18730976 is an apocalyptic number.

18730976 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 18730976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20321280).

18730976 is an abundant number, since it is smaller than the sum of its proper divisors (21911584).

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

18730976 is a wasteful number, since it uses less digits than its factorization.

18730976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 18730976 is about 4327.9297591343. The cubic root of 18730976 is about 265.5747629284.

The spelling of 18730976 in words is "eighteen million, seven hundred thirty thousand, nine hundred seventy-six".