28870884439 has 8 divisors (see below), whose sum is σ = 29496000960. Its totient is φ = 28246219776.

The previous prime is 28870884437. The next prime is 28870884463. The reversal of 28870884439 is 93448807882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28870884439 - 2¹ = 28870884437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28870884437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17827 + ... + 240955.

It is an arithmetic number, because the mean of its divisors is an integer number (3687000120).

Almost surely, 2^28870884439 is an apocalyptic number.

28870884439 is a deficient number, since it is larger than the sum of its proper divisors (625116521).

28870884439 is a wasteful number, since it uses less digits than its factorization.

28870884439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225929.

The product of its (nonzero) digits is 24772608, while the sum is 61.

The spelling of 28870884439 in words is "twenty-eight billion, eight hundred seventy million, eight hundred eighty-four thousand, four hundred thirty-nine".