28444151223 has 12 divisors (see below), whose sum is σ = 41469978888. Its totient is φ = 18785544720.

The previous prime is 28444151179. The next prime is 28444151233. The reversal of 28444151223 is 32215144482.

28444151223 is a `hidden beast` number, since 2 + 84 + 4 + 41 + 512 + 23 = 666.

It is not a de Polignac number, because 28444151223 - 2¹⁴ = 28444134839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28444151233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14767548 + ... + 14769473.

It is an arithmetic number, because the mean of its divisors is an integer number (3455831574).

Almost surely, 2^28444151223 is an apocalyptic number.

28444151223 is a deficient number, since it is larger than the sum of its proper divisors (13025827665).

28444151223 is a wasteful number, since it uses less digits than its factorization.

28444151223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29537134 (or 29537131 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The spelling of 28444151223 in words is "twenty-eight billion, four hundred forty-four million, one hundred fifty-one thousand, two hundred twenty-three".