80117870 has 64 divisors (see below), whose sum is σ = 176601600. Its totient is φ = 25557120.

The previous prime is 80117867. The next prime is 80117881. The reversal of 80117870 is 7871108.

80117870 = 218² + 219² + ... + 630².

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 77960 + ... + 78980.

It is an arithmetic number, because the mean of its divisors is an integer number (2759400).

Almost surely, 2^80117870 is an apocalyptic number.

80117870 is an abundant number, since it is smaller than the sum of its proper divisors (96483730).

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

80117870 is a wasteful number, since it uses less digits than its factorization.

80117870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 3136, while the sum is 32.

The square root of 80117870 is about 8950.8586180321. The cubic root of 80117870 is about 431.0984535072.

Adding to 80117870 its reverse (7871108), we get a palindrome (87988978).

The spelling of 80117870 in words is "eighty million, one hundred seventeen thousand, eight hundred seventy".