864132028 has 24 divisors (see below), whose sum is σ = 1523340000. Its totient is φ = 428902848.

The previous prime is 864131971. The next prime is 864132041. The reversal of 864132028 is 820231468.

It is a junction number, because it is equal to n+sod(n) for n = 864131984 and 864132002.

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, 442398 + ... + 444346.

It is an arithmetic number, because the mean of its divisors is an integer number (63472500).

Almost surely, 2^864132028 is an apocalyptic number.

It is an amenable number.

864132028 is a deficient number, since it is larger than the sum of its proper divisors (659207972).

864132028 is a wasteful number, since it uses less digits than its factorization.

864132028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 864132028 is about 29396.1226694950. The cubic root of 864132028 is about 952.4891429197.

The spelling of 864132028 in words is "eight hundred sixty-four million, one hundred thirty-two thousand, twenty-eight".