18984480 has 48 divisors (see below), whose sum is σ = 59802624. Its totient is φ = 5062400.

The previous prime is 18984479. The next prime is 18984521. The reversal of 18984480 is 8448981.

It is a tau number, because it is divible by the number of its divisors (48).

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, 19296 + ... + 20255.

It is an arithmetic number, because the mean of its divisors is an integer number (1245888).

Almost surely, 2^18984480 is an apocalyptic number.

18984480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18984480 is an abundant number, since it is smaller than the sum of its proper divisors (40818144).

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

18984480 is a wasteful number, since it uses less digits than its factorization.

18984480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39569 (or 39561 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 18984480 is about 4357.1183137482. The cubic root of 18984480 is about 266.7674896532.

The spelling of 18984480 in words is "eighteen million, nine hundred eighty-four thousand, four hundred eighty".