80807860 has 36 divisors (see below), whose sum is σ = 197404452. Its totient is φ = 27705216.

The previous prime is 80807827. The next prime is 80807863. The reversal of 80807860 is 6870808.

It can be written as a sum of positive squares in 2 ways, for example, as 30426256 + 50381604 = 5516^2 + 7098^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80807863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40249 + ... + 42208.

It is an arithmetic number, because the mean of its divisors is an integer number (5483457).

Almost surely, 2^80807860 is an apocalyptic number.

It is an amenable number.

80807860 is an abundant number, since it is smaller than the sum of its proper divisors (116596592).

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

80807860 is a wasteful number, since it uses less digits than its factorization.

80807860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82480 (or 82471 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 80807860 is about 8989.3192178273. The cubic root of 80807860 is about 432.3324843818.

The spelling of 80807860 in words is "eighty million, eight hundred seven thousand, eight hundred sixty".