28229226 has 8 divisors (see below), whose sum is σ = 56458464. Its totient is φ = 9409740.

The previous prime is 28229219. The next prime is 28229233. The reversal of 28229226 is 62292282.

It is an interprime number because it is at equal distance from previous prime (28229219) and next prime (28229233).

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

28229226 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2352430 + ... + 2352441.

It is an arithmetic number, because the mean of its divisors is an integer number (7057308).

Almost surely, 2^28229226 is an apocalyptic number.

28229226 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.

28229226 is a wasteful number, since it uses less digits than its factorization.

28229226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704876.

The product of its digits is 13824, while the sum is 33.

The square root of 28229226 is about 5313.1182934318. The cubic root of 28229226 is about 304.4852951125.

It can be divided in two parts, 2 and 8229226, that added together give a palindrome (8229228).

The spelling of 28229226 in words is "twenty-eight million, two hundred twenty-nine thousand, two hundred twenty-six".