80117772 has 96 divisors (see below), whose sum is σ = 224361984. Its totient is φ = 21772800.

The previous prime is 80117761. The next prime is 80117773. The reversal of 80117772 is 27771108.

It is not an unprimeable number, because it can be changed into a prime (80117773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147822 + ... + 148362.

It is an arithmetic number, because the mean of its divisors is an integer number (2337104).

Almost surely, 2^80117772 is an apocalyptic number.

80117772 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80117772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112180992).

80117772 is an abundant number, since it is smaller than the sum of its proper divisors (144244212).

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

80117772 is a wasteful number, since it uses less digits than its factorization.

80117772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 33.

The square root of 80117772 is about 8950.8531436953. The cubic root of 80117772 is about 431.0982777343.

The spelling of 80117772 in words is "eighty million, one hundred seventeen thousand, seven hundred seventy-two".