19920760 has 64 divisors (see below), whose sum is σ = 47692800. Its totient is φ = 7472256.

The previous prime is 19920757. The next prime is 19920799. The reversal of 19920760 is 6702991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54097 + ... + 54463.

It is an arithmetic number, because the mean of its divisors is an integer number (745200).

Almost surely, 2^19920760 is an apocalyptic number.

19920760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19920760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23846400).

19920760 is an abundant number, since it is smaller than the sum of its proper divisors (27772040).

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

19920760 is a wasteful number, since it uses less digits than its factorization.

19920760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 19920760 is about 4463.2678611080. The cubic root of 19920760 is about 271.0828030901.

The spelling of 19920760 in words is "nineteen million, nine hundred twenty thousand, seven hundred sixty".