36817220 has 48 divisors (see below), whose sum is σ = 86643648. Its totient is φ = 13023360.

The previous prime is 36817219. The next prime is 36817229. The reversal of 36817220 is 2271863.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (36817229) 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, 5879 + ... + 10401.

It is an arithmetic number, because the mean of its divisors is an integer number (1805076).

Almost surely, 2^36817220 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 36817220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43321824).

36817220 is an abundant number, since it is smaller than the sum of its proper divisors (49826428).

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

36817220 is a wasteful number, since it uses less digits than its factorization.

36817220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4580 (or 4578 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 36817220 is about 6067.7195057122. The cubic root of 36817220 is about 332.6725732761.

It can be divided in two parts, 3681 and 7220, that added together give a palindrome (10901).

The spelling of 36817220 in words is "thirty-six million, eight hundred seventeen thousand, two hundred twenty".