28570613087 has 12 divisors (see below), whose sum is σ = 30264531696. Its totient is φ = 26920428480.

The previous prime is 28570613059. The next prime is 28570613107. The reversal of 28570613087 is 78031607582.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-28570613087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28570613017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35114 + ... + 241607.

It is an arithmetic number, because the mean of its divisors is an integer number (2522044308).

Almost surely, 2^28570613087 is an apocalyptic number.

28570613087 is a deficient number, since it is larger than the sum of its proper divisors (1693918609).

28570613087 is an equidigital number, since it uses as much as digits as its factorization.

28570613087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276878 (or 276811 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 28570613087 in words is "twenty-eight billion, five hundred seventy million, six hundred thirteen thousand, eighty-seven".