36221968 has 20 divisors (see below), whose sum is σ = 74308860. Its totient is φ = 17045504.

The previous prime is 36221963. The next prime is 36221989. The reversal of 36221968 is 86912263.

It can be written as a sum of positive squares in 2 ways, for example, as 23348224 + 12873744 = 4832^2 + 3588^2 .

It is not an unprimeable number, because it can be changed into a prime (36221963) 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, 66313 + ... + 66856.

It is an arithmetic number, because the mean of its divisors is an integer number (3715443).

Almost surely, 2^36221968 is an apocalyptic number.

It is an amenable number.

36221968 is an abundant number, since it is smaller than the sum of its proper divisors (38086892).

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

36221968 is a wasteful number, since it uses less digits than its factorization.

36221968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133194 (or 133188 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 36221968 is about 6018.4689082856. The cubic root of 36221968 is about 330.8699665388.

The spelling of 36221968 in words is "thirty-six million, two hundred twenty-one thousand, nine hundred sixty-eight".