28262245 has 32 divisors (see below), whose sum is σ = 39626496. Its totient is φ = 19123200.

The previous prime is 28262237. The next prime is 28262249. The reversal of 28262245 is 54226282.

It is not a de Polignac number, because 28262245 - 2³ = 28262237 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 (28262249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156055 + ... + 156235.

It is an arithmetic number, because the mean of its divisors is an integer number (1238328).

Almost surely, 2^28262245 is an apocalyptic number.

It is an amenable number.

28262245 is a deficient number, since it is larger than the sum of its proper divisors (11364251).

28262245 is a wasteful number, since it uses less digits than its factorization.

28262245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381.

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

The square root of 28262245 is about 5316.2246942732. The cubic root of 28262245 is about 304.6039650637.

The spelling of 28262245 in words is "twenty-eight million, two hundred sixty-two thousand, two hundred forty-five".