36507220 has 36 divisors (see below), whose sum is σ = 78909012. Its totient is φ = 14179200.

The previous prime is 36507209. The next prime is 36507241. The reversal of 36507220 is 2270563.

It can be written as a sum of positive squares in 2 ways, for example, as 6411024 + 30096196 = 2532^2 + 5486^2 .

It is a super-2 number, since 2×36507220² = 2665554224256800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172915 + ... + 173125.

It is an arithmetic number, because the mean of its divisors is an integer number (2191917).

Almost surely, 2^36507220 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 36507220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39454506).

36507220 is an abundant number, since it is smaller than the sum of its proper divisors (42401792).

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

36507220 is a wasteful number, since it uses less digits than its factorization.

36507220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 36507220 is about 6042.1204887026. The cubic root of 36507220 is about 331.7362423444.

Adding to 36507220 its reverse (2270563), we get a palindrome (38777783).

The spelling of 36507220 in words is "thirty-six million, five hundred seven thousand, two hundred twenty".