18870612 has 24 divisors (see below), whose sum is σ = 46622016. Its totient is φ = 5920128.

The previous prime is 18870611. The next prime is 18870623. The reversal of 18870612 is 21607881.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18870611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46048 + ... + 46455.

It is an arithmetic number, because the mean of its divisors is an integer number (1942584).

Almost surely, 2^18870612 is an apocalyptic number.

18870612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18870612 is an abundant number, since it is smaller than the sum of its proper divisors (27751404).

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

18870612 is a wasteful number, since it uses less digits than its factorization.

18870612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92527 (or 92525 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 18870612 is about 4344.0317678396. The cubic root of 18870612 is about 266.2330668770.

The spelling of 18870612 in words is "eighteen million, eight hundred seventy thousand, six hundred twelve".