80777382 has 48 divisors (see below), whose sum is σ = 194015232. Its totient is φ = 22332240.

The previous prime is 80777377. The next prime is 80777453. The reversal of 80777382 is 28377708.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4683 + ... + 13545.

It is an arithmetic number, because the mean of its divisors is an integer number (4041984).

Almost surely, 2^80777382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80777382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97007616).

80777382 is an abundant number, since it is smaller than the sum of its proper divisors (113237850).

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

80777382 is a wasteful number, since it uses less digits than its factorization.

80777382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8913 (or 8906 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 80777382 is about 8987.6238239036. The cubic root of 80777382 is about 432.2781238019.

The spelling of 80777382 in words is "eighty million, seven hundred seventy-seven thousand, three hundred eighty-two".