28266245 has 8 divisors (see below), whose sum is σ = 38765184. Its totient is φ = 19382544.

The previous prime is 28266239. The next prime is 28266247. The reversal of 28266245 is 54266282.

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 28266245 - 2¹⁰ = 28265221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 807607 = 28266245 / (2 + 8 + 2 + 6 + 6 + 2 + 4 + 5).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28266247) 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, 403769 + ... + 403838.

It is an arithmetic number, because the mean of its divisors is an integer number (4845648).

Almost surely, 2^28266245 is an apocalyptic number.

It is an amenable number.

28266245 is a deficient number, since it is larger than the sum of its proper divisors (10498939).

28266245 is an equidigital number, since it uses as much as digits as its factorization.

28266245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807619.

The product of its digits is 46080, while the sum is 35.

The square root of 28266245 is about 5316.6008877854. The cubic root of 28266245 is about 304.6183347453.

The spelling of 28266245 in words is "twenty-eight million, two hundred sixty-six thousand, two hundred forty-five".