28057724371 has 2 divisors, whose sum is σ = 28057724372. Its totient is φ = 28057724370.

The previous prime is 28057724353. The next prime is 28057724377. The reversal of 28057724371 is 17342775082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28057724371 - 2²³ = 28049335763 is a prime.

It is not a weakly prime, because it can be changed into another prime (28057724377) 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 as a sum of consecutive naturals, namely, 14028862185 + 14028862186.

It is an arithmetic number, because the mean of its divisors is an integer number (14028862186).

Almost surely, 2^28057724371 is an apocalyptic number.

28057724371 is a deficient number, since it is larger than the sum of its proper divisors (1).

28057724371 is an equidigital number, since it uses as much as digits as its factorization.

28057724371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 658560, while the sum is 46.

The spelling of 28057724371 in words is "twenty-eight billion, fifty-seven million, seven hundred twenty-four thousand, three hundred seventy-one".