775813472 has 72 divisors (see below), whose sum is σ = 1870336440. Its totient is φ = 314979840.

The previous prime is 775813427. The next prime is 775813477. The reversal of 775813472 is 274318577.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775813477) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16772 + ... + 42812.

It is an arithmetic number, because the mean of its divisors is an integer number (25976895).

Almost surely, 2^775813472 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 775813472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (935168220).

775813472 is an abundant number, since it is smaller than the sum of its proper divisors (1094522968).

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

775813472 is a wasteful number, since it uses less digits than its factorization.

775813472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26084 (or 26069 counting only the distinct ones).

The product of its digits is 329280, while the sum is 44.

The square root of 775813472 is about 27853.4283706692. The cubic root of 775813472 is about 918.8665436436.

The spelling of 775813472 in words is "seven hundred seventy-five million, eight hundred thirteen thousand, four hundred seventy-two".