36228381 has 32 divisors (see below), whose sum is σ = 58226688. Its totient is φ = 19588800.

The previous prime is 36228341. The next prime is 36228391. The reversal of 36228381 is 18382263.

It is not a de Polignac number, because 36228381 - 2¹⁵ = 36195613 is a prime.

It is a super-3 number, since 3×36228381³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36228341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51331 + ... + 52031.

It is an arithmetic number, because the mean of its divisors is an integer number (1819584).

Almost surely, 2^36228381 is an apocalyptic number.

It is an amenable number.

36228381 is a deficient number, since it is larger than the sum of its proper divisors (21998307).

36228381 is a wasteful number, since it uses less digits than its factorization.

36228381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841.

The product of its digits is 13824, while the sum is 33.

The square root of 36228381 is about 6019.0016614053. The cubic root of 36228381 is about 330.8894919263.

The spelling of 36228381 in words is "thirty-six million, two hundred twenty-eight thousand, three hundred eighty-one".