18622480 has 40 divisors (see below), whose sum is σ = 45847512. Its totient is φ = 7010304.

The previous prime is 18622469. The next prime is 18622493. The reversal of 18622480 is 8422681.

It can be written as a sum of positive squares in 4 ways, for example, as 10419984 + 8202496 = 3228^2 + 2864^2 .

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

It is a super-2 number, since 2×18622480² = 693593522700800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5487 + ... + 8206.

Almost surely, 2^18622480 is an apocalyptic number.

18622480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18622480 is an abundant number, since it is smaller than the sum of its proper divisors (27225032).

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

18622480 is a wasteful number, since it uses less digits than its factorization.

18622480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13723 (or 13717 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 18622480 is about 4315.3771561707. The cubic root of 18622480 is about 265.0610041114.

The spelling of 18622480 in words is "eighteen million, six hundred twenty-two thousand, four hundred eighty".