19972772 has 12 divisors (see below), whose sum is σ = 35110656. Its totient is φ = 9941160.

The previous prime is 19972753. The next prime is 19972787. The reversal of 19972772 is 27727991.

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, 10304 + ... + 12087.

It is an arithmetic number, because the mean of its divisors is an integer number (2925888).

Almost surely, 2^19972772 is an apocalyptic number.

It is an amenable number.

19972772 is a deficient number, since it is larger than the sum of its proper divisors (15137884).

19972772 is a wasteful number, since it uses less digits than its factorization.

19972772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22618 (or 22616 counting only the distinct ones).

The product of its digits is 111132, while the sum is 44.

The square root of 19972772 is about 4469.0907352615. The cubic root of 19972772 is about 271.3185254465.

The spelling of 19972772 in words is "nineteen million, nine hundred seventy-two thousand, seven hundred seventy-two".