28274922923 has 4 divisors (see below), whose sum is σ = 30449917008. Its totient is φ = 26099928840.

The previous prime is 28274922913. The next prime is 28274923031. The reversal of 28274922923 is 32922947282.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28274922923 - 2⁸ = 28274922667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28274922913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087497023 + ... + 1087497048.

It is an arithmetic number, because the mean of its divisors is an integer number (7612479252).

Almost surely, 2^28274922923 is an apocalyptic number.

28274922923 is a deficient number, since it is larger than the sum of its proper divisors (2174994085).

28274922923 is a wasteful number, since it uses less digits than its factorization.

28274922923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174994084.

The product of its digits is 1741824, while the sum is 50.

The spelling of 28274922923 in words is "twenty-eight billion, two hundred seventy-four million, nine hundred twenty-two thousand, nine hundred twenty-three".