36915021 has 40 divisors (see below), whose sum is σ = 64805664. Its totient is φ = 20645280.

The previous prime is 36915019. The next prime is 36915031. The reversal of 36915021 is 12051963.

36915021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36915021 - 2¹ = 36915019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36915001) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 9990 + ... + 13176.

Almost surely, 2^36915021 is an apocalyptic number.

It is an amenable number.

36915021 is a deficient number, since it is larger than the sum of its proper divisors (27890643).

36915021 is a wasteful number, since it uses less digits than its factorization.

36915021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223 (or 3214 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 36915021 is about 6075.7732841178. The cubic root of 36915021 is about 332.9668825112.

Adding to 36915021 its reverse (12051963), we get a palindrome (48966984).

The spelling of 36915021 in words is "thirty-six million, nine hundred fifteen thousand, twenty-one".