18265480 has 32 divisors (see below), whose sum is σ = 43516440. Its totient is φ = 6876160.

The previous prime is 18265477. The next prime is 18265487. The reversal of 18265480 is 8456281.

It can be written as a sum of positive squares in 4 ways, for example, as 11985444 + 6280036 = 3462^2 + 2506^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (18265487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12751 + ... + 14110.

Almost surely, 2^18265480 is an apocalyptic number.

18265480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18265480 is an abundant number, since it is smaller than the sum of its proper divisors (25250960).

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

18265480 is a wasteful number, since it uses less digits than its factorization.

18265480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26889 (or 26885 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 18265480 is about 4273.8132855800. The cubic root of 18265480 is about 263.3562906155.

The spelling of 18265480 in words is "eighteen million, two hundred sixty-five thousand, four hundred eighty".