28010838 has 8 divisors (see below), whose sum is σ = 56021688. Its totient is φ = 9336944.

The previous prime is 28010833. The next prime is 28010867. The reversal of 28010838 is 83801082.

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

28010838 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28010833) 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, 2334231 + ... + 2334242.

It is an arithmetic number, because the mean of its divisors is an integer number (7002711).

Almost surely, 2^28010838 is an apocalyptic number.

28010838 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.

28010838 is a wasteful number, since it uses less digits than its factorization.

28010838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668478.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 28010838 is about 5292.5266177885. The cubic root of 28010838 is about 303.6980713613.

The spelling of 28010838 in words is "twenty-eight million, ten thousand, eight hundred thirty-eight".