864761028 has 24 divisors (see below), whose sum is σ = 2019177888. Its totient is φ = 288053376.

The previous prime is 864760997. The next prime is 864761099. The reversal of 864761028 is 820167468.

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, 6501 + ... + 42092.

It is an arithmetic number, because the mean of its divisors is an integer number (84132412).

Almost surely, 2^864761028 is an apocalyptic number.

It is an amenable number.

864761028 is an abundant number, since it is smaller than the sum of its proper divisors (1154416860).

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

864761028 is a wasteful number, since it uses less digits than its factorization.

864761028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50083 (or 50081 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 864761028 is about 29406.8194131905. The cubic root of 864761028 is about 952.7201918587.

The spelling of 864761028 in words is "eight hundred sixty-four million, seven hundred sixty-one thousand, twenty-eight".