18190480 has 80 divisors (see below), whose sum is σ = 52746624. Its totient is φ = 5667840.

The previous prime is 18190477. The next prime is 18190481. The reversal of 18190480 is 8409181.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (18190481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4684 + ... + 7636.

Almost surely, 2^18190480 is an apocalyptic number.

18190480 is a gapful number since it is divisible by the number (10) 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 18190480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26373312).

18190480 is an abundant number, since it is smaller than the sum of its proper divisors (34556144).

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

18190480 is a wasteful number, since it uses less digits than its factorization.

18190480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 18190480 is about 4265.0298943853. The cubic root of 18190480 is about 262.9953398337.

The spelling of 18190480 in words is "eighteen million, one hundred ninety thousand, four hundred eighty".