36285281 has 4 divisors (see below), whose sum is σ = 36333972. Its totient is φ = 36236592.

The previous prime is 36285229. The next prime is 36285289. The reversal of 36285281 is 18258263.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20611600 + 15673681 = 4540^2 + 3959^2 .

It is a cyclic number.

It is not a de Polignac number, because 36285281 - 2²² = 32090977 is a prime.

It is a super-2 number, since 2×36285281² = 2633243234497922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36285289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23210 + ... + 24723.

It is an arithmetic number, because the mean of its divisors is an integer number (9083493).

Almost surely, 2^36285281 is an apocalyptic number.

It is an amenable number.

36285281 is a deficient number, since it is larger than the sum of its proper divisors (48691).

36285281 is an equidigital number, since it uses as much as digits as its factorization.

36285281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48690.

The product of its digits is 23040, while the sum is 35.

The square root of 36285281 is about 6023.7265044157. The cubic root of 36285281 is about 331.0626320936.

The spelling of 36285281 in words is "thirty-six million, two hundred eighty-five thousand, two hundred eighty-one".