28839015475 has 12 divisors (see below), whose sum is σ = 37863931464. Its totient is φ = 21714081920.

The previous prime is 28839015473. The next prime is 28839015493. The reversal of 28839015475 is 57451093882.

It is a happy number.

It is not a de Polignac number, because 28839015475 - 2¹ = 28839015473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28839015473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33927829 + ... + 33928678.

It is an arithmetic number, because the mean of its divisors is an integer number (3155327622).

Almost surely, 2^28839015475 is an apocalyptic number.

28839015475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28839015475 is a deficient number, since it is larger than the sum of its proper divisors (9024915989).

28839015475 is a wasteful number, since it uses less digits than its factorization.

28839015475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67856534 (or 67856529 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 28839015475 in words is "twenty-eight billion, eight hundred thirty-nine million, fifteen thousand, four hundred seventy-five".