80190720 has 108 divisors (see below), whose sum is σ = 277491396. Its totient is φ = 21381120.

The previous prime is 80190709. The next prime is 80190727. The reversal of 80190720 is 2709108.

It can be written as a sum of positive squares in 2 ways, for example, as 46457856 + 33732864 = 6816^2 + 5808^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80190727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8040 + ... + 15000.

Almost surely, 2^80190720 is an apocalyptic number.

80190720 is a gapful number since it is divisible by the number (80) 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 80190720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138745698).

80190720 is an abundant number, since it is smaller than the sum of its proper divisors (197300676).

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

80190720 is a wasteful number, since it uses less digits than its factorization.

80190720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6988 (or 6971 counting only the distinct ones).

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

The square root of 80190720 is about 8954.9271353820. The cubic root of 80190720 is about 431.2290777499.

Adding to 80190720 its reverse (2709108), we get a palindrome (82899828).

The spelling of 80190720 in words is "eighty million, one hundred ninety thousand, seven hundred twenty".