28260869565 has 8 divisors (see below), whose sum is σ = 45217391328. Its totient is φ = 15072463760.

The previous prime is 28260869537. The next prime is 28260869573. The reversal of 28260869565 is 56596806282.

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

It is not a de Polignac number, because 28260869565 - 2¹⁰ = 28260868541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 942028971 + ... + 942029000.

It is an arithmetic number, because the mean of its divisors is an integer number (5652173916).

Almost surely, 2^28260869565 is an apocalyptic number.

It is an amenable number.

28260869565 is a deficient number, since it is larger than the sum of its proper divisors (16956521763).

28260869565 is a wasteful number, since it uses less digits than its factorization.

28260869565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884057979.

The product of its (nonzero) digits is 12441600, while the sum is 57.

The spelling of 28260869565 in words is "twenty-eight billion, two hundred sixty million, eight hundred sixty-nine thousand, five hundred sixty-five".