18582012 has 36 divisors (see below), whose sum is σ = 47862360. Its totient is φ = 6076512.

The previous prime is 18582007. The next prime is 18582041. The reversal of 18582012 is 21028581.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2962 + ... + 6777.

It is an arithmetic number, because the mean of its divisors is an integer number (1329510).

Almost surely, 2^18582012 is an apocalyptic number.

18582012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18582012 is an abundant number, since it is smaller than the sum of its proper divisors (29280348).

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

18582012 is a wasteful number, since it uses less digits than its factorization.

18582012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9802 (or 9797 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 18582012 is about 4310.6857923073. The cubic root of 18582012 is about 264.8688659372.

The spelling of 18582012 in words is "eighteen million, five hundred eighty-two thousand, twelve".