36204021 has 12 divisors (see below), whose sum is σ = 59765472. Its totient is φ = 20687976.

The previous prime is 36203983. The next prime is 36204029. The reversal of 36204021 is 12040263.

It is a happy number.

36204021 is a `hidden beast` number, since 3 + 620 + 40 + 2 + 1 = 666.

It is not a de Polignac number, because 36204021 - 2¹³ = 36195829 is a prime.

It is a super-2 number, since 2×36204021² = 2621462273136882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36203985 and 36204003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36204029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287271 + ... + 287396.

It is an arithmetic number, because the mean of its divisors is an integer number (4980456).

Almost surely, 2^36204021 is an apocalyptic number.

It is an amenable number.

36204021 is a deficient number, since it is larger than the sum of its proper divisors (23561451).

36204021 is a wasteful number, since it uses less digits than its factorization.

36204021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574680 (or 574677 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 36204021 is about 6016.9777297245. The cubic root of 36204021 is about 330.8153118213.

Adding to 36204021 its reverse (12040263), we get a palindrome (48244284).

The spelling of 36204021 in words is "thirty-six million, two hundred four thousand, twenty-one".