28744747223 has 2 divisors, whose sum is σ = 28744747224. Its totient is φ = 28744747222.

The previous prime is 28744747217. The next prime is 28744747301. The reversal of 28744747223 is 32274744782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28744747223 - 2³⁰ = 27671005399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28744747123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14372373611 + 14372373612.

It is an arithmetic number, because the mean of its divisors is an integer number (14372373612).

Almost surely, 2^28744747223 is an apocalyptic number.

28744747223 is a deficient number, since it is larger than the sum of its proper divisors (1).

28744747223 is an equidigital number, since it uses as much as digits as its factorization.

28744747223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4214784, while the sum is 50.

The spelling of 28744747223 in words is "twenty-eight billion, seven hundred forty-four million, seven hundred forty-seven thousand, two hundred twenty-three".