18102276 has 18 divisors (see below), whose sum is σ = 45758622. Its totient is φ = 6034080.

The previous prime is 18102251. The next prime is 18102283. The reversal of 18102276 is 67220181.

It can be written as a sum of positive squares in only one way, i.e., 17842176 + 260100 = 4224^2 + 510^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 251385 + ... + 251456.

Almost surely, 2^18102276 is an apocalyptic number.

It is an amenable number.

18102276 is an abundant number, since it is smaller than the sum of its proper divisors (27656346).

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

18102276 is a wasteful number, since it uses less digits than its factorization.

18102276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502851 (or 502846 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18102276 is about 4254.6769560097. The cubic root of 18102276 is about 262.5695706756.

The spelling of 18102276 in words is "eighteen million, one hundred two thousand, two hundred seventy-six".