28493595287 has 8 divisors (see below), whose sum is σ = 30236388480. Its totient is φ = 26792797240.

The previous prime is 28493595269. The next prime is 28493595311. The reversal of 28493595287 is 78259539482.

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 28493595287 - 2²⁰ = 28492546711 is a prime.

It is a super-2 number, since 2×28493595287² (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 (28493594287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10497389 + ... + 10500102.

It is an arithmetic number, because the mean of its divisors is an integer number (3779548560).

Almost surely, 2^28493595287 is an apocalyptic number.

28493595287 is a deficient number, since it is larger than the sum of its proper divisors (1742793193).

28493595287 is a wasteful number, since it uses less digits than its factorization.

28493595287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20997573.

The product of its digits is 43545600, while the sum is 62.

The spelling of 28493595287 in words is "twenty-eight billion, four hundred ninety-three million, five hundred ninety-five thousand, two hundred eighty-seven".