28026236 has 36 divisors (see below), whose sum is σ = 59543568. Its totient is φ = 11487168.

The previous prime is 28026223. The next prime is 28026253. The reversal of 28026236 is 63262082.

It is a junction number, because it is equal to n+sod(n) for n = 28026199 and 28026208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1400 + ... + 7616.

It is an arithmetic number, because the mean of its divisors is an integer number (1653988).

Almost surely, 2^28026236 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 28026236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29771784).

28026236 is an abundant number, since it is smaller than the sum of its proper divisors (31517332).

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

28026236 is a wasteful number, since it uses less digits than its factorization.

28026236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6258 (or 6249 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 28026236 is about 5293.9811106576. The cubic root of 28026236 is about 303.7537103760.

The spelling of 28026236 in words is "twenty-eight million, twenty-six thousand, two hundred thirty-six".