36685220 has 96 divisors (see below), whose sum is σ = 92123136. Its totient is φ = 12096000.

The previous prime is 36685213. The next prime is 36685277. The reversal of 36685220 is 2258663.

36685220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288797 + ... + 288923.

It is an arithmetic number, because the mean of its divisors is an integer number (959616).

Almost surely, 2^36685220 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 36685220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46061568).

36685220 is an abundant number, since it is smaller than the sum of its proper divisors (55437916).

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

36685220 is a wasteful number, since it uses less digits than its factorization.

36685220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 36685220 is about 6056.8325055263. The cubic root of 36685220 is about 332.2745225424.

It can be divided in two parts, 3668 and 5220, that added together give a palindrome (8888).

The spelling of 36685220 in words is "thirty-six million, six hundred eighty-five thousand, two hundred twenty".