28223999999 has 16 divisors (see below), whose sum is σ = 31112307072. Its totient is φ = 25438559328.

The previous prime is 28223999987. The next prime is 28224000037. The reversal of 28223999999 is 99999932282.

It is a Cunningham number, because it is equal to 168000²-1.

It is not a de Polignac number, because 28223999999 - 2⁴ = 28223999983 is a prime.

It is a Duffinian number.

28223999999 is a modest number, since divided by 999999 gives 28223 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28223999929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2177552 + ... + 2190474.

It is an arithmetic number, because the mean of its divisors is an integer number (1944519192).

Almost surely, 2^28223999999 is an apocalyptic number.

28223999999 is a deficient number, since it is larger than the sum of its proper divisors (2888307073).

28223999999 is a wasteful number, since it uses less digits than its factorization.

28223999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16886.

The product of its digits is 102036672, while the sum is 71.

The spelling of 28223999999 in words is "twenty-eight billion, two hundred twenty-three million, nine hundred ninety-nine thousand, nine hundred ninety-nine".