18701480 has 32 divisors (see below), whose sum is σ = 48090240. Its totient is φ = 6411840.

The previous prime is 18701467. The next prime is 18701483. The reversal of 18701480 is 8410781.

It is not an unprimeable number, because it can be changed into a prime (18701483) 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, 33116 + ... + 33675.

It is an arithmetic number, because the mean of its divisors is an integer number (1502820).

Almost surely, 2^18701480 is an apocalyptic number.

18701480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18701480 is an abundant number, since it is smaller than the sum of its proper divisors (29388760).

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

18701480 is a wasteful number, since it uses less digits than its factorization.

18701480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66809 (or 66805 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 18701480 is about 4324.5207826995. The cubic root of 18701480 is about 265.4352879290.

The spelling of 18701480 in words is "eighteen million, seven hundred one thousand, four hundred eighty".