769628240 has 40 divisors (see below), whose sum is σ = 1790584800. Its totient is φ = 307645056.

The previous prime is 769628239. The next prime is 769628281. The reversal of 769628240 is 42826967.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 769628191 and 769628200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185711 + ... + 189809.

It is an arithmetic number, because the mean of its divisors is an integer number (44764620).

Almost surely, 2^769628240 is an apocalyptic number.

It is an amenable number.

769628240 is an abundant number, since it is smaller than the sum of its proper divisors (1020956560).

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

769628240 is a wasteful number, since it uses less digits than its factorization.

769628240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459 (or 6453 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 769628240 is about 27742.1743920696. The cubic root of 769628240 is about 916.4181141359.

The spelling of 769628240 in words is "seven hundred sixty-nine million, six hundred twenty-eight thousand, two hundred forty".