19688712 has 32 divisors (see below), whose sum is σ = 51813600. Its totient is φ = 6217344.

The previous prime is 19688701. The next prime is 19688717. The reversal of 19688712 is 21788691.

It is not an unprimeable number, because it can be changed into a prime (19688717) 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, 21133 + ... + 22044.

It is an arithmetic number, because the mean of its divisors is an integer number (1619175).

Almost surely, 2^19688712 is an apocalyptic number.

19688712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19688712 is an abundant number, since it is smaller than the sum of its proper divisors (32124888).

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

19688712 is a wasteful number, since it uses less digits than its factorization.

19688712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43205 (or 43201 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 19688712 is about 4437.1964121504. The cubic root of 19688712 is about 270.0261154438.

The spelling of 19688712 in words is "nineteen million, six hundred eighty-eight thousand, seven hundred twelve".