28985246087256 has 24 divisors (see below), whose sum is σ = 78501708153180. Its totient is φ = 9661748695728.

The previous prime is 28985246087219. The next prime is 28985246087263. The reversal of 28985246087256 is 65278064258982.

28985246087256 is a `hidden beast` number, since 2 + 8 + 9 + 8 + 5 + 2 + 4 + 608 + 7 + 2 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 402572862323 = 28985246087256 / (2 + 8 + 9 + 8 + 5 + 2 + 4 + 6 + 0 + 8 + 7 + 2 + 5 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201286431090 + ... + 201286431233.

Almost surely, 2^{28985246087256} is an apocalyptic number.

It is an amenable number.

28985246087256 is an abundant number, since it is smaller than the sum of its proper divisors (49516462065924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28985246087256 is a wasteful number, since it uses less digits than its factorization.

28985246087256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402572862335 (or 402572862328 counting only the distinct ones).

The product of its (nonzero) digits is 928972800, while the sum is 72.

The spelling of 28985246087256 in words is "twenty-eight trillion, nine hundred eighty-five billion, two hundred forty-six million, eighty-seven thousand, two hundred fifty-six".