780872056 has 8 divisors (see below), whose sum is σ = 1464135120. Its totient is φ = 390436024.

The previous prime is 780871997. The next prime is 780872083. The reversal of 780872056 is 650278087.

It is a happy number.

780872056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×780872056² = 1219522335683334272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48804496 + ... + 48804511.

It is an arithmetic number, because the mean of its divisors is an integer number (183016890).

Almost surely, 2^780872056 is an apocalyptic number.

It is an amenable number.

780872056 is a deficient number, since it is larger than the sum of its proper divisors (683263064).

780872056 is a wasteful number, since it uses less digits than its factorization.

780872056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97609013 (or 97609009 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 780872056 is about 27944.0880330706. The cubic root of 780872056 is about 920.8593325601.

The spelling of 780872056 in words is "seven hundred eighty million, eight hundred seventy-two thousand, fifty-six".