28026229 has 8 divisors (see below), whose sum is σ = 34941888. Its totient is φ = 21838560.

The previous prime is 28026223. The next prime is 28026253. The reversal of 28026229 is 92262082.

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

It is a cyclic number.

It is not a de Polignac number, because 28026229 - 2⁹ = 28025717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28026229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28026223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181912 + ... + 182065.

It is an arithmetic number, because the mean of its divisors is an integer number (4367736).

Almost surely, 2^28026229 is an apocalyptic number.

It is an amenable number.

28026229 is a deficient number, since it is larger than the sum of its proper divisors (6915659).

28026229 is a wasteful number, since it uses less digits than its factorization.

28026229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363995.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 28026229 is about 5293.9804495294. The cubic root of 28026229 is about 303.7536850868.

The spelling of 28026229 in words is "twenty-eight million, twenty-six thousand, two hundred twenty-nine".