28236672 has 96 divisors (see below), whose sum is σ = 82318080. Its totient is φ = 9289728.

The previous prime is 28236647. The next prime is 28236673. The reversal of 28236672 is 27663282.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28236673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146208 + ... + 146400.

It is an arithmetic number, because the mean of its divisors is an integer number (857480).

Almost surely, 2^28236672 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 28236672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41159040).

28236672 is an abundant number, since it is smaller than the sum of its proper divisors (54081408).

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

28236672 is a wasteful number, since it uses less digits than its factorization.

28236672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 325 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 28236672 is about 5313.8189656781. The cubic root of 28236672 is about 304.5120640387.

The spelling of 28236672 in words is "twenty-eight million, two hundred thirty-six thousand, six hundred seventy-two".