776285840 has 120 divisors (see below), whose sum is σ = 2025620352. Its totient is φ = 274263040.

The previous prime is 776285827. The next prime is 776285843. The reversal of 776285840 is 48582677.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (776285843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5666252 + ... + 5666388.

Almost surely, 2^776285840 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 776285840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1012810176).

776285840 is an abundant number, since it is smaller than the sum of its proper divisors (1249334512).

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

776285840 is a wasteful number, since it uses less digits than its factorization.

776285840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 776285840 is about 27861.9066109985. The cubic root of 776285840 is about 919.0529952866.

The spelling of 776285840 in words is "seven hundred seventy-six million, two hundred eighty-five thousand, eight hundred forty".