28744857527 has 2 divisors, whose sum is σ = 28744857528. Its totient is φ = 28744857526.

The previous prime is 28744857487. The next prime is 28744857571. The reversal of 28744857527 is 72575844782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28744857527 - 2²² = 28740663223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28744857577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14372428763 + 14372428764.

It is an arithmetic number, because the mean of its divisors is an integer number (14372428764).

Almost surely, 2^28744857527 is an apocalyptic number.

28744857527 is a deficient number, since it is larger than the sum of its proper divisors (1).

28744857527 is an equidigital number, since it uses as much as digits as its factorization.

28744857527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35123200, while the sum is 59.

The spelling of 28744857527 in words is "twenty-eight billion, seven hundred forty-four million, eight hundred fifty-seven thousand, five hundred twenty-seven".