28886847 has 16 divisors (see below), whose sum is σ = 42612480. Its totient is φ = 17259200.

The previous prime is 28886833. The next prime is 28886867. The reversal of 28886847 is 74868882.

28886847 is nontrivially palindromic in base 5.

It is a cyclic number.

It is not a de Polignac number, because 28886847 - 2⁴ = 28886831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28886847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28886807) 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, 3822 + ... + 8507.

It is an arithmetic number, because the mean of its divisors is an integer number (2663280).

Almost surely, 2^28886847 is an apocalyptic number.

28886847 is a deficient number, since it is larger than the sum of its proper divisors (13725633).

28886847 is a wasteful number, since it uses less digits than its factorization.

28886847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12414.

The product of its digits is 1376256, while the sum is 51.

The square root of 28886847 is about 5374.6485466494. The cubic root of 28886847 is about 306.8315733793.

It can be divided in two parts, 28886 and 847, that multiplied together give a palindrome (24466442).

The spelling of 28886847 in words is "twenty-eight million, eight hundred eighty-six thousand, eight hundred forty-seven".