776828240 has 40 divisors (see below), whose sum is σ = 1811991168. Its totient is φ = 309722240.

The previous prime is 776828237. The next prime is 776828257. The reversal of 776828240 is 42828677.

776828240 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 (40).

It is a super-2 number, since 2×776828240² = 1206924228922995200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 776828191 and 776828200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9269 + ... + 40491.

Almost surely, 2^776828240 is an apocalyptic number.

It is an amenable number.

776828240 is an abundant number, since it is smaller than the sum of its proper divisors (1035162928).

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

776828240 is a wasteful number, since it uses less digits than its factorization.

776828240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31547 (or 31541 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 776828240 is about 27871.6386314117. The cubic root of 776828240 is about 919.2669964800.

The spelling of 776828240 in words is "seven hundred seventy-six million, eight hundred twenty-eight thousand, two hundred forty".