28142221023 has 48 divisors (see below), whose sum is σ = 47279831040. Its totient is φ = 15796855872.

The previous prime is 28142220989. The next prime is 28142221027. The reversal of 28142221023 is 32012224182.

28142221023 is a `hidden beast` number, since 2 + 8 + 1 + 422 + 210 + 23 = 666.

It is not a de Polignac number, because 28142221023 - 2⁶ = 28142220959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28142221027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7963765 + ... + 7967297.

It is an arithmetic number, because the mean of its divisors is an integer number (984996480).

Almost surely, 2^28142221023 is an apocalyptic number.

28142221023 is a deficient number, since it is larger than the sum of its proper divisors (19137610017).

28142221023 is a wasteful number, since it uses less digits than its factorization.

28142221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748 (or 5745 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 28142221023 in words is "twenty-eight billion, one hundred forty-two million, two hundred twenty-one thousand, twenty-three".