28857460000289 has 4 divisors (see below), whose sum is σ = 28969745837124. Its totient is φ = 28745174163456.

The previous prime is 28857460000267. The next prime is 28857460000307. The reversal of 28857460000289 is 98200006475882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27678205176064 + 1179254824225 = 5261008^2 + 1085935^2 .

It is a cyclic number.

It is not a de Polignac number, because 28857460000289 - 2¹² = 28857459996193 is a prime.

It is a super-2 number, since 2×28857460000289² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28857460003289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56142918032 + ... + 56142918545.

It is an arithmetic number, because the mean of its divisors is an integer number (7242436459281).

Almost surely, 2^{28857460000289} is an apocalyptic number.

It is an amenable number.

28857460000289 is a deficient number, since it is larger than the sum of its proper divisors (112285836835).

28857460000289 is a wasteful number, since it uses less digits than its factorization.

28857460000289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112285836834.

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 28857460000289 in words is "twenty-eight trillion, eight hundred fifty-seven billion, four hundred sixty million, two hundred eighty-nine", and thus it is an aban number.