18870708 has 12 divisors (see below), whose sum is σ = 44031680. Its totient is φ = 6290232.

The previous prime is 18870707. The next prime is 18870721. The reversal of 18870708 is 80707881.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×18870708² = 712207240842528, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18870707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786268 + ... + 786291.

Almost surely, 2^18870708 is an apocalyptic number.

It is an amenable number.

18870708 is an abundant number, since it is smaller than the sum of its proper divisors (25160972).

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

18870708 is a wasteful number, since it uses less digits than its factorization.

18870708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572566 (or 1572564 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 39.

The square root of 18870708 is about 4344.0428174685. The cubic root of 18870708 is about 266.2335183432.

The spelling of 18870708 in words is "eighteen million, eight hundred seventy thousand, seven hundred eight".