28446229 has 8 divisors (see below), whose sum is σ = 33388928. Its totient is φ = 23723280.

The previous prime is 28446179. The next prime is 28446247. The reversal of 28446229 is 92264482.

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

It is not a de Polignac number, because 28446229 - 2¹¹ = 28444181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28446259) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 54657 + ... + 55174.

It is an arithmetic number, because the mean of its divisors is an integer number (4173616).

Almost surely, 2^28446229 is an apocalyptic number.

It is an amenable number.

28446229 is a deficient number, since it is larger than the sum of its proper divisors (4942699).

28446229 is a wasteful number, since it uses less digits than its factorization.

28446229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109875.

The product of its digits is 55296, while the sum is 37.

The square root of 28446229 is about 5333.5006327927. The cubic root of 28446229 is about 305.2635149833.

The spelling of 28446229 in words is "twenty-eight million, four hundred forty-six thousand, two hundred twenty-nine".