18881480 has 32 divisors (see below), whose sum is σ = 43856640. Its totient is φ = 7308480.

The previous prime is 18881461. The next prime is 18881483. The reversal of 18881480 is 8418881.

It is not an unprimeable number, because it can be changed into a prime (18881483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6374 + ... + 8853.

It is an arithmetic number, because the mean of its divisors is an integer number (1370520).

Almost surely, 2^18881480 is an apocalyptic number.

18881480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18881480 is an abundant number, since it is smaller than the sum of its proper divisors (24975160).

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

18881480 is a wasteful number, since it uses less digits than its factorization.

18881480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15269 (or 15265 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 38.

The square root of 18881480 is about 4345.2824994470. The cubic root of 18881480 is about 266.2841668923.

The spelling of 18881480 in words is "eighteen million, eight hundred eighty-one thousand, four hundred eighty".