771304880 has 80 divisors (see below), whose sum is σ = 1862827200. Its totient is φ = 296647680.

The previous prime is 771304861. The next prime is 771304903. The reversal of 771304880 is 88403177.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×771304880² = 1189822435823628800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720986 + ... + 722054.

It is an arithmetic number, because the mean of its divisors is an integer number (23285340).

Almost surely, 2^771304880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 771304880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (931413600).

771304880 is an abundant number, since it is smaller than the sum of its proper divisors (1091522320).

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

771304880 is a wasteful number, since it uses less digits than its factorization.

771304880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 1416 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 771304880 is about 27772.3762037028. The cubic root of 771304880 is about 917.0831056971.

The spelling of 771304880 in words is "seven hundred seventy-one million, three hundred four thousand, eight hundred eighty".