28936229 has 8 divisors (see below), whose sum is σ = 34210560. Its totient is φ = 23947056.

The previous prime is 28936223. The next prime is 28936241. The reversal of 28936229 is 92263982.

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

It is not a de Polignac number, because 28936229 - 2⁴ = 28936213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28936223) 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, 71069 + ... + 71474.

It is an arithmetic number, because the mean of its divisors is an integer number (4276320).

Almost surely, 2^28936229 is an apocalyptic number.

28936229 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28936229 is a deficient number, since it is larger than the sum of its proper divisors (5274331).

28936229 is a wasteful number, since it uses less digits than its factorization.

28936229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142579.

The product of its digits is 93312, while the sum is 41.

The square root of 28936229 is about 5379.2405597817. The cubic root of 28936229 is about 307.0063164711.

The spelling of 28936229 in words is "twenty-eight million, nine hundred thirty-six thousand, two hundred twenty-nine".