28226245 has 16 divisors (see below), whose sum is σ = 34958448. Its totient is φ = 21864960.

The previous prime is 28226203. The next prime is 28226257. The reversal of 28226245 is 54262282.

It can be written as a sum of positive squares in 8 ways, for example, as 2022084 + 26204161 = 1422^2 + 5119^2 .

It is not a de Polignac number, because 28226245 - 2¹³ = 28218053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31747 + ... + 32623.

It is an arithmetic number, because the mean of its divisors is an integer number (2184903).

Almost surely, 2^28226245 is an apocalyptic number.

It is an amenable number.

28226245 is a deficient number, since it is larger than the sum of its proper divisors (6732203).

28226245 is a wasteful number, since it uses less digits than its factorization.

28226245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080.

The product of its digits is 15360, while the sum is 31.

The square root of 28226245 is about 5312.8377539692. The cubic root of 28226245 is about 304.4745768754.

The spelling of 28226245 in words is "twenty-eight million, two hundred twenty-six thousand, two hundred forty-five".