28934864 has 40 divisors (see below), whose sum is σ = 64966080. Its totient is φ = 12227328.

The previous prime is 28934831. The next prime is 28934869. The reversal of 28934864 is 46843982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28934869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6407 + ... + 9945.

It is an arithmetic number, because the mean of its divisors is an integer number (1624152).

Almost surely, 2^28934864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28934864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32483040).

28934864 is an abundant number, since it is smaller than the sum of its proper divisors (36031216).

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

28934864 is a wasteful number, since it uses less digits than its factorization.

28934864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627 (or 3621 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 28934864 is about 5379.1136816394. The cubic root of 28934864 is about 307.0014889564.

It can be divided in two parts, 289 and 34864, that added together give a palindrome (35153).

The spelling of 28934864 in words is "twenty-eight million, nine hundred thirty-four thousand, eight hundred sixty-four".