19393912 has 16 divisors (see below), whose sum is σ = 36414000. Its totient is φ = 9683520.

The previous prime is 19393909. The next prime is 19393921. The reversal of 19393912 is 21939391.

It is a super-2 number, since 2×19393912² = 752247645327488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7237 + ... + 9547.

It is an arithmetic number, because the mean of its divisors is an integer number (2275875).

Almost surely, 2^19393912 is an apocalyptic number.

It is an amenable number.

19393912 is a deficient number, since it is larger than the sum of its proper divisors (17020088).

19393912 is a wasteful number, since it uses less digits than its factorization.

19393912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366 (or 3362 counting only the distinct ones).

The product of its digits is 13122, while the sum is 37.

The square root of 19393912 is about 4403.8519502817. The cubic root of 19393912 is about 268.6716279859.

The spelling of 19393912 in words is "nineteen million, three hundred ninety-three thousand, nine hundred twelve".