80682820 has 12 divisors (see below), whose sum is σ = 169433964. Its totient is φ = 32273120.

The previous prime is 80682817. The next prime is 80682821. The reversal of 80682820 is 2828608.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31990336 + 48692484 = 5656^2 + 6978^2 .

It is not an unprimeable number, because it can be changed into a prime (80682821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2017051 + ... + 2017090.

It is an arithmetic number, because the mean of its divisors is an integer number (14119497).

Almost surely, 2^80682820 is an apocalyptic number.

It is an amenable number.

80682820 is an abundant number, since it is smaller than the sum of its proper divisors (88751144).

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

80682820 is a wasteful number, since it uses less digits than its factorization.

80682820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034150 (or 4034148 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 80682820 is about 8982.3616048342. The cubic root of 80682820 is about 432.1093758833.

The spelling of 80682820 in words is "eighty million, six hundred eighty-two thousand, eight hundred twenty".