773808378 has 64 divisors (see below), whose sum is σ = 1795322880. Its totient is φ = 217786752.

The previous prime is 773808319. The next prime is 773808379. The reversal of 773808378 is 873808377.

It is a self number, because there is not a number n which added to its sum of digits gives 773808378.

It is not an unprimeable number, because it can be changed into a prime (773808379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1046733 + ... + 1047471.

It is an arithmetic number, because the mean of its divisors is an integer number (28051920).

Almost surely, 2^773808378 is an apocalyptic number.

773808378 is an abundant number, since it is smaller than the sum of its proper divisors (1021514502).

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

773808378 is a wasteful number, since it uses less digits than its factorization.

773808378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091.

The product of its (nonzero) digits is 1580544, while the sum is 51.

The square root of 773808378 is about 27817.4114180310. The cubic root of 773808378 is about 918.0742555547.

Subtracting 773808378 from its reverse (873808377), we obtain a palindrome (99999999).

It can be divided in two parts, 77380 and 8378, that added together give a palindrome (85758).

The spelling of 773808378 in words is "seven hundred seventy-three million, eight hundred eight thousand, three hundred seventy-eight".