28436832 has 168 divisors, whose sum is σ = 89241264. Its totient is φ = 8895744.

The previous prime is 28436819. The next prime is 28436861. The reversal of 28436832 is 23863482.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 536518 + ... + 536570.

It is an arithmetic number, because the mean of its divisors is an integer number (531198).

Almost surely, 2^28436832 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 28436832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44620632).

28436832 is an abundant number, since it is smaller than the sum of its proper divisors (60804432).

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

28436832 is an equidigital number, since it uses as much as digits as its factorization.

28436832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 81 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28436832 is about 5332.6196189115. The cubic root of 28436832 is about 305.2298974380.

The spelling of 28436832 in words is "twenty-eight million, four hundred thirty-six thousand, eight hundred thirty-two".