28056310357 has 2 divisors, whose sum is σ = 28056310358. Its totient is φ = 28056310356.

The previous prime is 28056310327. The next prime is 28056310369. The reversal of 28056310357 is 75301365082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24323833521 + 3732476836 = 155961^2 + 61094^2 .

It is a cyclic number.

It is not a de Polignac number, because 28056310357 - 2¹⁵ = 28056277589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28056310327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14028155178 + 14028155179.

It is an arithmetic number, because the mean of its divisors is an integer number (14028155179).

Almost surely, 2^28056310357 is an apocalyptic number.

It is an amenable number.

28056310357 is a deficient number, since it is larger than the sum of its proper divisors (1).

28056310357 is an equidigital number, since it uses as much as digits as its factorization.

28056310357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 28056310357 in words is "twenty-eight billion, fifty-six million, three hundred ten thousand, three hundred fifty-seven".