19979312 has 20 divisors (see below), whose sum is σ = 38780256. Its totient is φ = 9971520.

The previous prime is 19979299. The next prime is 19979327. The reversal of 19979312 is 21397991.

It is a self number, because there is not a number n which added to its sum of digits gives 19979312.

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, 14393 + ... + 15719.

Almost surely, 2^19979312 is an apocalyptic number.

It is an amenable number.

19979312 is a deficient number, since it is larger than the sum of its proper divisors (18800944).

19979312 is a wasteful number, since it uses less digits than its factorization.

19979312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276 (or 2270 counting only the distinct ones).

The product of its digits is 30618, while the sum is 41.

The square root of 19979312 is about 4469.8223678352. The cubic root of 19979312 is about 271.3481362506.

The spelling of 19979312 in words is "nineteen million, nine hundred seventy-nine thousand, three hundred twelve".