19197912 has 32 divisors (see below), whose sum is σ = 48715200. Its totient is φ = 6303264.

The previous prime is 19197887. The next prime is 19197917. The reversal of 19197912 is 21979191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19197917) 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, 4362 + ... + 7577.

It is an arithmetic number, because the mean of its divisors is an integer number (1522350).

Almost surely, 2^19197912 is an apocalyptic number.

19197912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19197912 is an abundant number, since it is smaller than the sum of its proper divisors (29517288).

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

19197912 is a wasteful number, since it uses less digits than its factorization.

19197912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12015 (or 12011 counting only the distinct ones).

The product of its digits is 10206, while the sum is 39.

The square root of 19197912 is about 4381.5421942508. The cubic root of 19197912 is about 267.7634729032.

The spelling of 19197912 in words is "nineteen million, one hundred ninety-seven thousand, nine hundred twelve".