782864380 has 12 divisors (see below), whose sum is σ = 1644015240. Its totient is φ = 313145744.

The previous prime is 782864347. The next prime is 782864393. The reversal of 782864380 is 83468287.

It is a super-2 number, since 2×782864380² = 1225753274945568800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 782864380.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19571590 + ... + 19571629.

It is an arithmetic number, because the mean of its divisors is an integer number (137001270).

Almost surely, 2^782864380 is an apocalyptic number.

It is an amenable number.

782864380 is an abundant number, since it is smaller than the sum of its proper divisors (861150860).

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

782864380 is a wasteful number, since it uses less digits than its factorization.

782864380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39143228 (or 39143226 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 782864380 is about 27979.7137226241. The cubic root of 782864380 is about 921.6418303792.

The spelling of 782864380 in words is "seven hundred eighty-two million, eight hundred sixty-four thousand, three hundred eighty".