19944492 has 12 divisors (see below), whose sum is σ = 46537176. Its totient is φ = 6648160.

The previous prime is 19944487. The next prime is 19944503. The reversal of 19944492 is 29444991.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×19944492² = 795565522276128, which contains 22 as substring.

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, 831009 + ... + 831032.

It is an arithmetic number, because the mean of its divisors is an integer number (3878098).

Almost surely, 2^19944492 is an apocalyptic number.

19944492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19944492 is an abundant number, since it is smaller than the sum of its proper divisors (26592684).

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

19944492 is a wasteful number, since it uses less digits than its factorization.

19944492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662048 (or 1662046 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 19944492 is about 4465.9256599276. The cubic root of 19944492 is about 271.1904091595.

The spelling of 19944492 in words is "nineteen million, nine hundred forty-four thousand, four hundred ninety-two".