775423140 has 96 divisors (see below), whose sum is σ = 2205106176. Its totient is φ = 203575680.

The previous prime is 775423087. The next prime is 775423169. The reversal of 775423140 is 41324577.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1674549 + ... + 1675011.

It is an arithmetic number, because the mean of its divisors is an integer number (22969856).

Almost surely, 2^775423140 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 775423140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102553088).

775423140 is an abundant number, since it is smaller than the sum of its proper divisors (1429683036).

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

775423140 is a wasteful number, since it uses less digits than its factorization.

775423140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 775423140 is about 27846.4205958324. The cubic root of 775423140 is about 918.7124158812.

The spelling of 775423140 in words is "seven hundred seventy-five million, four hundred twenty-three thousand, one hundred forty".