28545615487 has 8 divisors (see below), whose sum is σ = 29163736512. Its totient is φ = 27927943200.

The previous prime is 28545615481. The next prime is 28545615493. The reversal of 28545615487 is 78451654582.

It is an interprime number because it is at equal distance from previous prime (28545615481) and next prime (28545615493).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28545615487 - 2⁷ = 28545615359 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 (28545615481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18037 + ... + 239617.

It is an arithmetic number, because the mean of its divisors is an integer number (3645467064).

Almost surely, 2^28545615487 is an apocalyptic number.

28545615487 is a deficient number, since it is larger than the sum of its proper divisors (618121025).

28545615487 is a wasteful number, since it uses less digits than its factorization.

28545615487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224369.

The product of its digits is 10752000, while the sum is 55.

The spelling of 28545615487 in words is "twenty-eight billion, five hundred forty-five million, six hundred fifteen thousand, four hundred eighty-seven".