769420728 has 64 divisors (see below), whose sum is σ = 2139552000. Its totient is φ = 256201056.

The previous prime is 769420723. The next prime is 769420741. The reversal of 769420728 is 827024967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769420723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376333 + ... + 378371.

It is an arithmetic number, because the mean of its divisors is an integer number (33430500).

Almost surely, 2^769420728 is an apocalyptic number.

It is an amenable number.

769420728 is an abundant number, since it is smaller than the sum of its proper divisors (1370131272).

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

769420728 is a wasteful number, since it uses less digits than its factorization.

769420728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801 (or 3791 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 769420728 is about 27738.4341302821. The cubic root of 769420728 is about 916.3357432630.

The spelling of 769420728 in words is "seven hundred sixty-nine million, four hundred twenty thousand, seven hundred twenty-eight".