18897708 has 24 divisors (see below), whose sum is σ = 44175040. Its totient is φ = 6287760.

The previous prime is 18897701. The next prime is 18897709. The reversal of 18897708 is 80779881.

It is not an unprimeable number, because it can be changed into a prime (18897701) 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, 7803 + ... + 9933.

Almost surely, 2^18897708 is an apocalyptic number.

It is an amenable number.

18897708 is an abundant number, since it is smaller than the sum of its proper divisors (25277332).

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

18897708 is a wasteful number, since it uses less digits than its factorization.

18897708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 48.

The square root of 18897708 is about 4347.1494108208. The cubic root of 18897708 is about 266.3604324898.

The spelling of 18897708 in words is "eighteen million, eight hundred ninety-seven thousand, seven hundred eight".