36381228 has 48 divisors (see below), whose sum is σ = 94381056. Its totient is φ = 10831680.

The previous prime is 36381223. The next prime is 36381251. The reversal of 36381228 is 82218363.

It is not an unprimeable number, because it can be changed into a prime (36381221) 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, 1075 + ... + 8597.

It is an arithmetic number, because the mean of its divisors is an integer number (1966272).

Almost surely, 2^36381228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36381228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47190528).

36381228 is an abundant number, since it is smaller than the sum of its proper divisors (57999828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36381228 is a wasteful number, since it uses less digits than its factorization.

36381228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7574 (or 7572 counting only the distinct ones).

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

The square root of 36381228 is about 6031.6853366203. The cubic root of 36381228 is about 331.3541783158.

The spelling of 36381228 in words is "thirty-six million, three hundred eighty-one thousand, two hundred twenty-eight".