36208021 has 4 divisors (see below), whose sum is σ = 37050112. Its totient is φ = 35365932.

The previous prime is 36207949. The next prime is 36208027. The reversal of 36208021 is 12080263.

36208021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12080263 = 13 ⋅929251.

It is a cyclic number.

It is not a de Polignac number, because 36208021 - 2¹³ = 36199829 is a prime.

It is a super-2 number, since 2×36208021² = 2622041569472882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36207983 and 36208001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36208027) 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 3 ways as a sum of consecutive naturals, for example, 420981 + ... + 421066.

It is an arithmetic number, because the mean of its divisors is an integer number (9262528).

Almost surely, 2^36208021 is an apocalyptic number.

It is an amenable number.

36208021 is a deficient number, since it is larger than the sum of its proper divisors (842091).

36208021 is an equidigital number, since it uses as much as digits as its factorization.

36208021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842090.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 36208021 is about 6017.3101133314. The cubic root of 36208021 is about 330.8274947453.

Adding to 36208021 its reverse (12080263), we get a palindrome (48288284).

The spelling of 36208021 in words is "thirty-six million, two hundred eight thousand, twenty-one".