28202838 has 8 divisors (see below), whose sum is σ = 56405688. Its totient is φ = 9400944.

The previous prime is 28202831. The next prime is 28202851. The reversal of 28202838 is 83820282.

It is a sphenic number, since it is the product of 3 distinct primes.

28202838 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28202799 and 28202808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28202831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2350231 + ... + 2350242.

It is an arithmetic number, because the mean of its divisors is an integer number (7050711).

Almost surely, 2^28202838 is an apocalyptic number.

28202838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28202838 is a wasteful number, since it uses less digits than its factorization.

28202838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4700478.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28202838 is about 5310.6344253771. The cubic root of 28202838 is about 304.3903903634.

The spelling of 28202838 in words is "twenty-eight million, two hundred two thousand, eight hundred thirty-eight".