80779782 has 16 divisors (see below), whose sum is σ = 163375920. Its totient is φ = 26623872.

The previous prime is 80779781. The next prime is 80779837. The reversal of 80779782 is 28797708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80779781) 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, 75103 + ... + 76170.

It is an arithmetic number, because the mean of its divisors is an integer number (10210995).

Almost surely, 2^80779782 is an apocalyptic number.

80779782 is an abundant number, since it is smaller than the sum of its proper divisors (82596138).

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

80779782 is a wasteful number, since it uses less digits than its factorization.

80779782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151367.

The product of its (nonzero) digits is 395136, while the sum is 48.

The square root of 80779782 is about 8987.7573398485. The cubic root of 80779782 is about 432.2824049393.

The spelling of 80779782 in words is "eighty million, seven hundred seventy-nine thousand, seven hundred eighty-two".