28354272 has 24 divisors (see below), whose sum is σ = 74430216. Its totient is φ = 9451392.

The previous prime is 28354267. The next prime is 28354273. The reversal of 28354272 is 27245382.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28354273) 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 3 ways as a sum of consecutive naturals, for example, 147583 + ... + 147774.

It is an arithmetic number, because the mean of its divisors is an integer number (3101259).

Almost surely, 2^28354272 is an apocalyptic number.

It is an amenable number.

28354272 is an abundant number, since it is smaller than the sum of its proper divisors (46075944).

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

28354272 is a wasteful number, since it uses less digits than its factorization.

28354272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295370 (or 295362 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 28354272 is about 5324.8729562310. The cubic root of 28354272 is about 304.9342221314.

The spelling of 28354272 in words is "twenty-eight million, three hundred fifty-four thousand, two hundred seventy-two".