19992412 has 24 divisors (see below), whose sum is σ = 38514672. Its totient is φ = 9004800.

The previous prime is 19992407. The next prime is 19992419. The reversal of 19992412 is 21429991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19992419) 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, 2962 + ... + 6982.

It is an arithmetic number, because the mean of its divisors is an integer number (1604778).

Almost surely, 2^19992412 is an apocalyptic number.

It is an amenable number.

19992412 is a deficient number, since it is larger than the sum of its proper divisors (18522260).

19992412 is a wasteful number, since it uses less digits than its factorization.

19992412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149 (or 4147 counting only the distinct ones).

The product of its digits is 11664, while the sum is 37.

The square root of 19992412 is about 4471.2875103263. The cubic root of 19992412 is about 271.4074289824.

The spelling of 19992412 in words is "nineteen million, nine hundred ninety-two thousand, four hundred twelve".