28485461087 has 4 divisors (see below), whose sum is σ = 28487713056. Its totient is φ = 28483209120.

The previous prime is 28485461083. The next prime is 28485461089. The reversal of 28485461087 is 78016458482.

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

It is a cyclic number.

It is not a de Polignac number, because 28485461087 - 2² = 28485461083 is a prime.

It is a super-2 number, since 2×28485461087² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28485461083) 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, 1106903 + ... + 1132344.

It is an arithmetic number, because the mean of its divisors is an integer number (7121928264).

Almost surely, 2^28485461087 is an apocalyptic number.

28485461087 is a deficient number, since it is larger than the sum of its proper divisors (2251969).

28485461087 is a wasteful number, since it uses less digits than its factorization.

28485461087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251968.

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 28485461087 in words is "twenty-eight billion, four hundred eighty-five million, four hundred sixty-one thousand, eighty-seven".