28604284851 has 16 divisors (see below), whose sum is σ = 38790571680. Its totient is φ = 18746238720.

The previous prime is 28604284817. The next prime is 28604284867. The reversal of 28604284851 is 15848240682.

It is not a de Polignac number, because 28604284851 - 2²¹ = 28602187699 is a prime.

It is a super-2 number, since 2×28604284851² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28604284851.

It is not an unprimeable number, because it can be changed into a prime (28604282851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263440 + ... + 355821.

It is an arithmetic number, because the mean of its divisors is an integer number (2424410730).

Almost surely, 2^28604284851 is an apocalyptic number.

28604284851 is a deficient number, since it is larger than the sum of its proper divisors (10186286829).

28604284851 is a wasteful number, since it uses less digits than its factorization.

28604284851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619526.

The product of its (nonzero) digits is 983040, while the sum is 48.

The spelling of 28604284851 in words is "twenty-eight billion, six hundred four million, two hundred eighty-four thousand, eight hundred fifty-one".