19798012 has 18 divisors (see below), whose sum is σ = 37517928. Its totient is φ = 9137232.

The previous prime is 19798003. The next prime is 19798027. The reversal of 19798012 is 21089791.

It is a super-2 number, since 2×19798012² = 783922558304288, 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 5 ways as a sum of consecutive naturals, for example, 13968 + ... + 15319.

Almost surely, 2^19798012 is an apocalyptic number.

It is an amenable number.

19798012 is a deficient number, since it is larger than the sum of its proper divisors (17719916).

19798012 is a wasteful number, since it uses less digits than its factorization.

19798012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29317 (or 29302 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 19798012 is about 4449.4957017622. The cubic root of 19798012 is about 270.5248683635.

The spelling of 19798012 in words is "nineteen million, seven hundred ninety-eight thousand, twelve".