872864738 has 24 divisors (see below), whose sum is σ = 1356841044. Its totient is φ = 420987840.

The previous prime is 872864719. The next prime is 872864749. The reversal of 872864738 is 837468278.

872864738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 316235089 + 556629649 = 17783^2 + 23593^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 872864738.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 393320 + ... + 395532.

Almost surely, 2^872864738 is an apocalyptic number.

872864738 is a deficient number, since it is larger than the sum of its proper divisors (483976306).

872864738 is a wasteful number, since it uses less digits than its factorization.

872864738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390 (or 2329 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 53.

The square root of 872864738 is about 29544.2843541691. The cubic root of 872864738 is about 955.6869368469.

The spelling of 872864738 in words is "eight hundred seventy-two million, eight hundred sixty-four thousand, seven hundred thirty-eight".