28870852017 has 32 divisors (see below), whose sum is σ = 45987758080. Its totient is φ = 15763325760.

The previous prime is 28870852001. The next prime is 28870852027. The reversal of 28870852017 is 71025807882.

It is not a de Polignac number, because 28870852017 - 2⁴ = 28870852001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28870852027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229258 + ... + 332115.

It is an arithmetic number, because the mean of its divisors is an integer number (1437117440).

Almost surely, 2^28870852017 is an apocalyptic number.

It is an amenable number.

28870852017 is a deficient number, since it is larger than the sum of its proper divisors (17116906063).

28870852017 is a wasteful number, since it uses less digits than its factorization.

28870852017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561493.

The product of its (nonzero) digits is 501760, while the sum is 48.

It can be divided in two parts, 288708 and 52017, that added together give a triangular number (340725 = T₈₂₅).

The spelling of 28870852017 in words is "twenty-eight billion, eight hundred seventy million, eight hundred fifty-two thousand, seventeen".