28229278719 has 16 divisors (see below), whose sum is σ = 39863868768. Its totient is φ = 17707702272.

The previous prime is 28229278691. The next prime is 28229278729. The reversal of 28229278719 is 91787292282.

It is not a de Polignac number, because 28229278719 - 2⁸ = 28229278463 is a prime.

It is a super-2 number, since 2×28229278719² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28229278729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120759 + ... + 266535.

It is an arithmetic number, because the mean of its divisors is an integer number (2491491798).

Almost surely, 2^28229278719 is an apocalyptic number.

28229278719 is a deficient number, since it is larger than the sum of its proper divisors (11634590049).

28229278719 is a wasteful number, since it uses less digits than its factorization.

28229278719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149594.

The product of its digits is 4064256, while the sum is 57.

The spelling of 28229278719 in words is "twenty-eight billion, two hundred twenty-nine million, two hundred seventy-eight thousand, seven hundred nineteen".