772808904 has 128 divisors (see below), whose sum is σ = 2495232000. Its totient is φ = 217035072.

The previous prime is 772808903. The next prime is 772808923. The reversal of 772808904 is 409808277.

It is a self number, because there is not a number n which added to its sum of digits gives 772808904.

It is not an unprimeable number, because it can be changed into a prime (772808903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84877 + ... + 93539.

It is an arithmetic number, because the mean of its divisors is an integer number (19494000).

Almost surely, 2^772808904 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 772808904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247616000).

772808904 is an abundant number, since it is smaller than the sum of its proper divisors (1722423096).

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

772808904 is a wasteful number, since it uses less digits than its factorization.

772808904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8744 (or 8734 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 772808904 is about 27799.4407137985. The cubic root of 772808904 is about 917.6788145467.

The spelling of 772808904 in words is "seven hundred seventy-two million, eight hundred eight thousand, nine hundred four".