776316440 has 64 divisors (see below), whose sum is σ = 1873432800. Its totient is φ = 288617472.

The previous prime is 776316433. The next prime is 776316451. The reversal of 776316440 is 44613677.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 776316394 and 776316403.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 30644 + ... + 49916.

Almost surely, 2^776316440 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 776316440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (936716400).

776316440 is an abundant number, since it is smaller than the sum of its proper divisors (1097116360).

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

776316440 is a wasteful number, since it uses less digits than its factorization.

776316440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19356 (or 19352 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 776316440 is about 27862.4557424503. The cubic root of 776316440 is about 919.0650710156.

The spelling of 776316440 in words is "seven hundred seventy-six million, three hundred sixteen thousand, four hundred forty".