28838136 has 64 divisors (see below), whose sum is σ = 76204800. Its totient is φ = 9075968.

The previous prime is 28838099. The next prime is 28838167. The reversal of 28838136 is 63183882.

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

It is a junction number, because it is equal to n+sod(n) for n = 28838094 and 28838103.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 48835 + ... + 49421.

It is an arithmetic number, because the mean of its divisors is an integer number (1190700).

Almost surely, 2^28838136 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 28838136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38102400).

28838136 is an abundant number, since it is smaller than the sum of its proper divisors (47366664).

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

28838136 is a wasteful number, since it uses less digits than its factorization.

28838136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 704 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 28838136 is about 5370.1150825657. The cubic root of 28838136 is about 306.6590094706.

The spelling of 28838136 in words is "twenty-eight million, eight hundred thirty-eight thousand, one hundred thirty-six".