80878158 has 48 divisors (see below), whose sum is σ = 185749200. Its totient is φ = 25388160.

The previous prime is 80878151. The next prime is 80878181. The reversal of 80878158 is 85187808.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80878151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19513 + ... + 23291.

It is an arithmetic number, because the mean of its divisors is an integer number (3869775).

Almost surely, 2^80878158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80878158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92874600).

80878158 is an abundant number, since it is smaller than the sum of its proper divisors (104871042).

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

80878158 is a wasteful number, since it uses less digits than its factorization.

80878158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857 (or 3854 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 45.

The square root of 80878158 is about 8993.2284525636. The cubic root of 80878158 is about 432.4578158373.

The spelling of 80878158 in words is "eighty million, eight hundred seventy-eight thousand, one hundred fifty-eight".