775378380 has 48 divisors (see below), whose sum is σ = 2481212160. Its totient is φ = 177229248.

The previous prime is 775378361. The next prime is 775378397. The reversal of 775378380 is 83873577.

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, 922650 + ... + 923489.

It is an arithmetic number, because the mean of its divisors is an integer number (51691920).

Almost surely, 2^775378380 is an apocalyptic number.

775378380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

775378380 is an abundant number, since it is smaller than the sum of its proper divisors (1705833780).

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

775378380 is a wasteful number, since it uses less digits than its factorization.

775378380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846158 (or 1846156 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 48.

The square root of 775378380 is about 27845.6168902756. The cubic root of 775378380 is about 918.6947384967.

The spelling of 775378380 in words is "seven hundred seventy-five million, three hundred seventy-eight thousand, three hundred eighty".