872828387 has 4 divisors (see below), whose sum is σ = 873694440. Its totient is φ = 871962336.

The previous prime is 872828381. The next prime is 872828389. The reversal of 872828387 is 783828278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783828278 = 2 ⋅391914139.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872828387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872828381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431513 + ... + 433530.

It is an arithmetic number, because the mean of its divisors is an integer number (218423610).

Almost surely, 2^872828387 is an apocalyptic number.

872828387 is a deficient number, since it is larger than the sum of its proper divisors (866053).

872828387 is a wasteful number, since it uses less digits than its factorization.

872828387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866052.

The product of its digits is 2408448, while the sum is 53.

The square root of 872828387 is about 29543.6691526290. The cubic root of 872828387 is about 955.6736699352.

The spelling of 872828387 in words is "eight hundred seventy-two million, eight hundred twenty-eight thousand, three hundred eighty-seven".