28063156223 has 4 divisors (see below), whose sum is σ = 28075625448. Its totient is φ = 28050687000.

The previous prime is 28063156217. The next prime is 28063156229. The reversal of 28063156223 is 32265136082.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (28063156217) and next prime (28063156229).

It is a cyclic number.

It is not a de Polignac number, because 28063156223 - 2²⁴ = 28046379007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28063156229) 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, 6231236 + ... + 6235737.

It is an arithmetic number, because the mean of its divisors is an integer number (7018906362).

Almost surely, 2^28063156223 is an apocalyptic number.

28063156223 is a deficient number, since it is larger than the sum of its proper divisors (12469225).

28063156223 is a wasteful number, since it uses less digits than its factorization.

28063156223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12469224.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 28063156223 in words is "twenty-eight billion, sixty-three million, one hundred fifty-six thousand, two hundred twenty-three".