28554223227 has 4 divisors (see below), whose sum is σ = 38072297640. Its totient is φ = 19036148816.

The previous prime is 28554223211. The next prime is 28554223261. The reversal of 28554223227 is 72232245582.

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 28554223227 - 2⁴ = 28554223211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28554224227) 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, 4759037202 + ... + 4759037207.

It is an arithmetic number, because the mean of its divisors is an integer number (9518074410).

Almost surely, 2^28554223227 is an apocalyptic number.

28554223227 is a deficient number, since it is larger than the sum of its proper divisors (9518074413).

28554223227 is an equidigital number, since it uses as much as digits as its factorization.

28554223227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9518074412.

The product of its digits is 537600, while the sum is 42.

The spelling of 28554223227 in words is "twenty-eight billion, five hundred fifty-four million, two hundred twenty-three thousand, two hundred twenty-seven".