80891016 has 32 divisors (see below), whose sum is σ = 204318240. Its totient is φ = 26684928.

The previous prime is 80891011. The next prime is 80891029. The reversal of 80891016 is 61019808.

It is not an unprimeable number, because it can be changed into a prime (80891011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15046 + ... + 19701.

It is an arithmetic number, because the mean of its divisors is an integer number (6384945).

Almost surely, 2^80891016 is an apocalyptic number.

It is an amenable number.

80891016 is an abundant number, since it is smaller than the sum of its proper divisors (123427224).

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

80891016 is a wasteful number, since it uses less digits than its factorization.

80891016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34853 (or 34849 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 80891016 is about 8993.9432953516. The cubic root of 80891016 is about 432.4807319871.

The spelling of 80891016 in words is "eighty million, eight hundred ninety-one thousand, sixteen".