769534820 has 12 divisors (see below), whose sum is σ = 1616023164. Its totient is φ = 307813920.

The previous prime is 769534771. The next prime is 769534823. The reversal of 769534820 is 28435967.

It can be written as a sum of positive squares in 2 ways, for example, as 523860544 + 245674276 = 22888^2 + 15674^2 .

It is not an unprimeable number, because it can be changed into a prime (769534823) 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 3 ways as a sum of consecutive naturals, for example, 19238351 + ... + 19238390.

It is an arithmetic number, because the mean of its divisors is an integer number (134668597).

Almost surely, 2^769534820 is an apocalyptic number.

It is an amenable number.

769534820 is an abundant number, since it is smaller than the sum of its proper divisors (846488344).

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

769534820 is a wasteful number, since it uses less digits than its factorization.

769534820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38476750 (or 38476748 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 769534820 is about 27740.4906229144. The cubic root of 769534820 is about 916.3810333567.

The spelling of 769534820 in words is "seven hundred sixty-nine million, five hundred thirty-four thousand, eight hundred twenty".