19713900 has 36 divisors (see below), whose sum is σ = 57039752. Its totient is φ = 5256960.

The previous prime is 19713899. The next prime is 19713917. The reversal of 19713900 is 931791.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 32557 + ... + 33156.

Almost surely, 2^19713900 is an apocalyptic number.

19713900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19713900 is an abundant number, since it is smaller than the sum of its proper divisors (37325852).

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

19713900 is a wasteful number, since it uses less digits than its factorization.

19713900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65730 (or 65723 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 19713900 is about 4440.0337836553. The cubic root of 19713900 is about 270.1412155661.

The spelling of 19713900 in words is "nineteen million, seven hundred thirteen thousand, nine hundred".