22398265 has 16 divisors (see below), whose sum is σ = 28751760. Its totient is φ = 16691200.

The previous prime is 22398263. The next prime is 22398289. The reversal of 22398265 is 56289322.

It can be written as a sum of positive squares in 8 ways, for example, as 2782224 + 19616041 = 1668^2 + 4429^2 .

It is not a de Polignac number, because 22398265 - 2¹ = 22398263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22398263) 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 15 ways as a sum of consecutive naturals, for example, 7281 + ... + 9889.

It is an arithmetic number, because the mean of its divisors is an integer number (1796985).

Almost surely, 2^22398265 is an apocalyptic number.

It is an amenable number.

22398265 is a deficient number, since it is larger than the sum of its proper divisors (6353495).

22398265 is a wasteful number, since it uses less digits than its factorization.

22398265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732.

The product of its digits is 51840, while the sum is 37.

The square root of 22398265 is about 4732.6805301013. The cubic root of 22398265 is about 281.8846710808.

The spelling of 22398265 in words is "twenty-two million, three hundred ninety-eight thousand, two hundred sixty-five".