28945255 has 8 divisors (see below), whose sum is σ = 34779024. Its totient is φ = 23126400.

The previous prime is 28945253. The next prime is 28945283. The reversal of 28945255 is 55254982.

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

It is not a de Polignac number, because 28945255 - 2¹ = 28945253 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 (28945253) 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, 1120 + ... + 7690.

It is an arithmetic number, because the mean of its divisors is an integer number (4347378).

Almost surely, 2^28945255 is an apocalyptic number.

28945255 is a deficient number, since it is larger than the sum of its proper divisors (5833769).

28945255 is an equidigital number, since it uses as much as digits as its factorization.

28945255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7457.

The product of its digits is 144000, while the sum is 40.

The square root of 28945255 is about 5380.0794603797. The cubic root of 28945255 is about 307.0382343705.

The spelling of 28945255 in words is "twenty-eight million, nine hundred forty-five thousand, two hundred fifty-five".