19920712 has 32 divisors (see below), whose sum is σ = 43038720. Its totient is φ = 8467200.

The previous prime is 19920707. The next prime is 19920713. The reversal of 19920712 is 21702991.

It is not an unprimeable number, because it can be changed into a prime (19920713) 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, 5712 + ... + 8512.

It is an arithmetic number, because the mean of its divisors is an integer number (1344960).

Almost surely, 2^19920712 is an apocalyptic number.

It is an amenable number.

19920712 is an abundant number, since it is smaller than the sum of its proper divisors (23118008).

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

19920712 is a wasteful number, since it uses less digits than its factorization.

19920712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941 (or 2937 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 19920712 is about 4463.2624838788. The cubic root of 19920712 is about 271.0825853610.

The spelling of 19920712 in words is "nineteen million, nine hundred twenty thousand, seven hundred twelve".