775389472 has 96 divisors (see below), whose sum is σ = 1855586880. Its totient is φ = 314065920.

The previous prime is 775389467. The next prime is 775389479. The reversal of 775389472 is 274983577.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (775389479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129783 + ... + 135625.

It is an arithmetic number, because the mean of its divisors is an integer number (19329030).

Almost surely, 2^775389472 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 775389472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927793440).

775389472 is an abundant number, since it is smaller than the sum of its proper divisors (1080197408).

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

775389472 is a wasteful number, since it uses less digits than its factorization.

775389472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906 (or 5898 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 52.

The square root of 775389472 is about 27845.8160591497. The cubic root of 775389472 is about 918.6991192024.

The spelling of 775389472 in words is "seven hundred seventy-five million, three hundred eighty-nine thousand, four hundred seventy-two".