18996700 has 18 divisors (see below), whose sum is σ = 41223056. Its totient is φ = 7598640.

The previous prime is 18996683. The next prime is 18996709. The reversal of 18996700 is 769981.

It is a super-2 number, since 2×18996700² = 721749221780000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18996709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94884 + ... + 95083.

Almost surely, 2^18996700 is an apocalyptic number.

18996700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18996700 is an abundant number, since it is smaller than the sum of its proper divisors (22226356).

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

18996700 is a wasteful number, since it uses less digits than its factorization.

18996700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189981 (or 189974 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 18996700 is about 4358.5203911419. The cubic root of 18996700 is about 266.8247153366.

The spelling of 18996700 in words is "eighteen million, nine hundred ninety-six thousand, seven hundred".