28810223167 has 4 divisors (see below), whose sum is σ = 31429334376. Its totient is φ = 26191111960.

The previous prime is 28810223107. The next prime is 28810223171. The reversal of 28810223167 is 76132201882.

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 28810223167 - 2¹¹ = 28810221119 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28810223107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1309555588 + ... + 1309555609.

It is an arithmetic number, because the mean of its divisors is an integer number (7857333594).

Almost surely, 2^28810223167 is an apocalyptic number.

28810223167 is a deficient number, since it is larger than the sum of its proper divisors (2619111209).

28810223167 is a wasteful number, since it uses less digits than its factorization.

28810223167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619111208.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 28810223167 in words is "twenty-eight billion, eight hundred ten million, two hundred twenty-three thousand, one hundred sixty-seven".