28601823285 has 48 divisors (see below), whose sum is σ = 56683800576. Its totient is φ = 13069361664.

The previous prime is 28601823277. The next prime is 28601823311. The reversal of 28601823285 is 58232810682.

28601823285 is a `hidden beast` number, since 2 + 8 + 601 + 8 + 2 + 32 + 8 + 5 = 666.

It is not a de Polignac number, because 28601823285 - 2³ = 28601823277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28601823285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 742572 + ... + 780138.

It is an arithmetic number, because the mean of its divisors is an integer number (1180912512).

Almost surely, 2^28601823285 is an apocalyptic number.

It is an amenable number.

28601823285 is a deficient number, since it is larger than the sum of its proper divisors (28081977291).

28601823285 is a wasteful number, since it uses less digits than its factorization.

28601823285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40002 (or 39999 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 28601823285 in words is "twenty-eight billion, six hundred one million, eight hundred twenty-three thousand, two hundred eighty-five".