36384021 has 24 divisors (see below), whose sum is σ = 53936064. Its totient is φ = 23627520.

The previous prime is 36384017. The next prime is 36384037. The reversal of 36384021 is 12048363.

It is a happy number.

36384021 is a `hidden beast` number, since 3 + 638 + 4 + 0 + 21 = 666.

It is not a de Polignac number, because 36384021 - 2² = 36384017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36383021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61690 + ... + 62276.

It is an arithmetic number, because the mean of its divisors is an integer number (2247336).

Almost surely, 2^36384021 is an apocalyptic number.

It is an amenable number.

36384021 is a deficient number, since it is larger than the sum of its proper divisors (17552043).

36384021 is a wasteful number, since it uses less digits than its factorization.

36384021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 36384021 is about 6031.9168595066. The cubic root of 36384021 is about 331.3626574921.

The spelling of 36384021 in words is "thirty-six million, three hundred eighty-four thousand, twenty-one".