28571083087 has 2 divisors, whose sum is σ = 28571083088. Its totient is φ = 28571083086.

The previous prime is 28571083081. The next prime is 28571083103. The reversal of 28571083087 is 78038017582.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28571083087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28571083087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28571083081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14285541543 + 14285541544.

It is an arithmetic number, because the mean of its divisors is an integer number (14285541544).

Almost surely, 2^28571083087 is an apocalyptic number.

28571083087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28571083087 is an equidigital number, since it uses as much as digits as its factorization.

28571083087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 28571083087 in words is "twenty-eight billion, five hundred seventy-one million, eighty-three thousand, eighty-seven".