28263265 has 8 divisors (see below), whose sum is σ = 35911080. Its totient is φ = 21280512.

The previous prime is 28263253. The next prime is 28263269. The reversal of 28263265 is 56236282.

It can be written as a sum of positive squares in 4 ways, for example, as 4769856 + 23493409 = 2184^2 + 4847^2 .

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 28263265 - 2⁵ = 28263233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28263265.

It is not an unprimeable number, because it can be changed into a prime (28263269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166170 + ... + 166339.

It is an arithmetic number, because the mean of its divisors is an integer number (4488885).

Almost surely, 2^28263265 is an apocalyptic number.

It is an amenable number.

28263265 is a deficient number, since it is larger than the sum of its proper divisors (7647815).

28263265 is a wasteful number, since it uses less digits than its factorization.

28263265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332531.

The product of its digits is 34560, while the sum is 34.

The square root of 28263265 is about 5316.3206261474. The cubic root of 28263265 is about 304.6076294613.

The spelling of 28263265 in words is "twenty-eight million, two hundred sixty-three thousand, two hundred sixty-five".