36321640 has 16 divisors (see below), whose sum is σ = 81723780. Its totient is φ = 14528640.

The previous prime is 36321631. The next prime is 36321643. The reversal of 36321640 is 4612363.

It can be written as a sum of positive squares in 2 ways, for example, as 33016516 + 3305124 = 5746^2 + 1818^2 .

It is not an unprimeable number, because it can be changed into a prime (36321643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 453981 + ... + 454060.

Almost surely, 2^36321640 is an apocalyptic number.

It is an amenable number.

36321640 is an abundant number, since it is smaller than the sum of its proper divisors (45402140).

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

36321640 is a wasteful number, since it uses less digits than its factorization.

36321640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908052 (or 908048 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 36321640 is about 6026.7437310707. The cubic root of 36321640 is about 331.1731735917.

The spelling of 36321640 in words is "thirty-six million, three hundred twenty-one thousand, six hundred forty".