782072912 has 20 divisors (see below), whose sum is σ = 1519569780. Its totient is φ = 389925888.

The previous prime is 782072911. The next prime is 782072939. The reversal of 782072912 is 219270287.

It can be written as a sum of positive squares in 2 ways, for example, as 309619216 + 472453696 = 17596^2 + 21736^2 .

It is a super-2 number, since 2×782072912² = 1223276079368319488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (782072911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63587 + ... + 74882.

It is an arithmetic number, because the mean of its divisors is an integer number (75978489).

Almost surely, 2^782072912 is an apocalyptic number.

It is an amenable number.

782072912 is a deficient number, since it is larger than the sum of its proper divisors (737496868).

782072912 is a wasteful number, since it uses less digits than its factorization.

782072912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138830 (or 138824 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 782072912 is about 27965.5665417313. The cubic root of 782072912 is about 921.3311354512.

The spelling of 782072912 in words is "seven hundred eighty-two million, seventy-two thousand, nine hundred twelve".