28394265 has 32 divisors (see below), whose sum is σ = 48568320. Its totient is φ = 14122944.

The previous prime is 28394257. The next prime is 28394287. The reversal of 28394265 is 56249382.

It is a happy number.

It is not a de Polignac number, because 28394265 - 2³ = 28394257 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18352 + ... + 19838.

It is an arithmetic number, because the mean of its divisors is an integer number (1517760).

Almost surely, 2^28394265 is an apocalyptic number.

It is an amenable number.

28394265 is a deficient number, since it is larger than the sum of its proper divisors (20174055).

28394265 is a wasteful number, since it uses less digits than its factorization.

28394265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581.

The product of its digits is 103680, while the sum is 39.

The square root of 28394265 is about 5328.6269338358. The cubic root of 28394265 is about 305.0775221739.

The spelling of 28394265 in words is "twenty-eight million, three hundred ninety-four thousand, two hundred sixty-five".