36686440 has 32 divisors (see below), whose sum is σ = 94337280. Its totient is φ = 12578112.

The previous prime is 36686413. The next prime is 36686477. The reversal of 36686440 is 4468663.

36686440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 36686440.

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 7 ways as a sum of consecutive naturals, for example, 65232 + ... + 65791.

It is an arithmetic number, because the mean of its divisors is an integer number (2948040).

Almost surely, 2^36686440 is an apocalyptic number.

It is an amenable number.

36686440 is an abundant number, since it is smaller than the sum of its proper divisors (57650840).

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

36686440 is a wasteful number, since it uses less digits than its factorization.

36686440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131041 (or 131037 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 36686440 is about 6056.9332173964. The cubic root of 36686440 is about 332.2782058643.

The spelling of 36686440 in words is "thirty-six million, six hundred eighty-six thousand, four hundred forty".