18930480 has 40 divisors (see below), whose sum is σ = 58685232. Its totient is φ = 5048064.

The previous prime is 18930467. The next prime is 18930511. The reversal of 18930480 is 8403981.

It is a tau number, because it is divible by the number of its divisors (40).

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, 39199 + ... + 39678.

Almost surely, 2^18930480 is an apocalyptic number.

18930480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18930480 is an abundant number, since it is smaller than the sum of its proper divisors (39754752).

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

18930480 is a wasteful number, since it uses less digits than its factorization.

18930480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78893 (or 78887 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18930480 is about 4350.9171446949. The cubic root of 18930480 is about 266.5143157539.

The spelling of 18930480 in words is "eighteen million, nine hundred thirty thousand, four hundred eighty".