77326280 has 32 divisors (see below), whose sum is σ = 177690240. Its totient is φ = 30271680.

The previous prime is 77326279. The next prime is 77326283. The reversal of 77326280 is 8262377.

It is a self number, because there is not a number n which added to its sum of digits gives 77326280.

It is not an unprimeable number, because it can be changed into a prime (77326283) 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, 18686 + ... + 22445.

It is an arithmetic number, because the mean of its divisors is an integer number (5552820).

Almost surely, 2^77326280 is an apocalyptic number.

It is an amenable number.

77326280 is an abundant number, since it is smaller than the sum of its proper divisors (100363960).

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

77326280 is a wasteful number, since it uses less digits than its factorization.

77326280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41189 (or 41185 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 77326280 is about 8793.5362625055. The cubic root of 77326280 is about 426.0321487490.

The spelling of 77326280 in words is "seventy-seven million, three hundred twenty-six thousand, two hundred eighty".