36021906 has 24 divisors (see below), whose sum is σ = 78459420. Its totient is φ = 11943936.

The previous prime is 36021893. The next prime is 36021913. The reversal of 36021906 is 60912063.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30305025 + 5716881 = 5505^2 + 2391^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 36021906.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1711 + ... + 8658.

Almost surely, 2^36021906 is an apocalyptic number.

36021906 is an abundant number, since it is smaller than the sum of its proper divisors (42437514).

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

36021906 is a wasteful number, since it uses less digits than its factorization.

36021906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10570 (or 10567 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 36021906 is about 6001.8252223803. The cubic root of 36021906 is about 330.2596854005.

Adding to 36021906 its reverse (60912063), we get a palindrome (96933969).

The spelling of 36021906 in words is "thirty-six million, twenty-one thousand, nine hundred six".