864612280 has 32 divisors (see below), whose sum is σ = 2223289440. Its totient is φ = 296438400.

The previous prime is 864612277. The next prime is 864612319. The reversal of 864612280 is 82216468.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1543671 + ... + 1544230.

It is an arithmetic number, because the mean of its divisors is an integer number (69477795).

Almost surely, 2^864612280 is an apocalyptic number.

It is an amenable number.

864612280 is an abundant number, since it is smaller than the sum of its proper divisors (1358677160).

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

864612280 is a wasteful number, since it uses less digits than its factorization.

864612280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087919 (or 3087915 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 864612280 is about 29404.2901631718. The cubic root of 864612280 is about 952.6655627589.

The spelling of 864612280 in words is "eight hundred sixty-four million, six hundred twelve thousand, two hundred eighty".