80019720 has 192 divisors, whose sum is σ = 287763840. Its totient is φ = 19282560.

The previous prime is 80019679. The next prime is 80019721. The reversal of 80019720 is 2791008.

It is not an unprimeable number, because it can be changed into a prime (80019721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 479077 + ... + 479243.

It is an arithmetic number, because the mean of its divisors is an integer number (1498770).

Almost surely, 2^80019720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80019720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143881920).

80019720 is an abundant number, since it is smaller than the sum of its proper divisors (207744120).

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

80019720 is a wasteful number, since it uses less digits than its factorization.

80019720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 80019720 is about 8945.3742235862. The cubic root of 80019720 is about 430.9223396411.

The spelling of 80019720 in words is "eighty million, nineteen thousand, seven hundred twenty".