36001281 has 16 divisors (see below), whose sum is σ = 48761856. Its totient is φ = 23624016.

The previous prime is 36001249. The next prime is 36001307. The reversal of 36001281 is 18210063.

It is not a de Polignac number, because 36001281 - 2⁵ = 36001249 is a prime.

It is a super-2 number, since 2×36001281² = 2592184467281922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36001241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81046 + ... + 81488.

It is an arithmetic number, because the mean of its divisors is an integer number (3047616).

Almost surely, 2^36001281 is an apocalyptic number.

It is an amenable number.

36001281 is a deficient number, since it is larger than the sum of its proper divisors (12760575).

36001281 is a wasteful number, since it uses less digits than its factorization.

36001281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 36001281 is about 6000.1067490504. The cubic root of 36001281 is about 330.1966412956.

The spelling of 36001281 in words is "thirty-six million, one thousand, two hundred eighty-one".