775442432 has 78 divisors (see below), whose sum is σ = 1610465274. Its totient is φ = 373309440.

The previous prime is 775442429. The next prime is 775442441. The reversal of 775442432 is 234244577.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 771506176 + 3936256 = 27776^2 + 1984^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3936158 + ... + 3936354.

Almost surely, 2^775442432 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 775442432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805232637).

775442432 is an abundant number, since it is smaller than the sum of its proper divisors (835022842).

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

775442432 is an equidigital number, since it uses as much as digits as its factorization.

775442432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 230 counting only the distinct ones).

The product of its digits is 188160, while the sum is 38.

The square root of 775442432 is about 27846.7669936745. The cubic root of 775442432 is about 918.7200347979.

The spelling of 775442432 in words is "seven hundred seventy-five million, four hundred forty-two thousand, four hundred thirty-two".