28272355 has 8 divisors (see below), whose sum is σ = 34014672. Its totient is φ = 22559328.

The previous prime is 28272353. The next prime is 28272383. The reversal of 28272355 is 55327282.

28272355 = 43² + 44² + ... + 439².

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 28272355 - 2¹ = 28272353 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 28272355.

It is not an unprimeable number, because it can be changed into a prime (28272353) 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, 5137 + ... + 9106.

It is an arithmetic number, because the mean of its divisors is an integer number (4251834).

Almost surely, 2^28272355 is an apocalyptic number.

28272355 is a deficient number, since it is larger than the sum of its proper divisors (5742317).

28272355 is a wasteful number, since it uses less digits than its factorization.

28272355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14645.

The product of its digits is 33600, while the sum is 34.

The square root of 28272355 is about 5317.1754719964. The cubic root of 28272355 is about 304.6402818172.

The spelling of 28272355 in words is "twenty-eight million, two hundred seventy-two thousand, three hundred fifty-five".