28185265 has 8 divisors (see below), whose sum is σ = 35602560. Its totient is φ = 21361392.

The previous prime is 28185263. The next prime is 28185271. The reversal of 28185265 is 56258182.

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 28185265 - 2¹ = 28185263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28185263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148249 + ... + 148438.

It is an arithmetic number, because the mean of its divisors is an integer number (4450320).

Almost surely, 2^28185265 is an apocalyptic number.

It is an amenable number.

28185265 is a deficient number, since it is larger than the sum of its proper divisors (7417295).

28185265 is a wasteful number, since it uses less digits than its factorization.

28185265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296711.

The product of its digits is 38400, while the sum is 37.

The square root of 28185265 is about 5308.9796571469. The cubic root of 28185265 is about 304.3271560215.

The spelling of 28185265 in words is "twenty-eight million, one hundred eighty-five thousand, two hundred sixty-five".