36326781 has 12 divisors (see below), whose sum is σ = 53333020. Its totient is φ = 23820480.

The previous prime is 36326777. The next prime is 36326789. The reversal of 36326781 is 18762363.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7650756 + 28676025 = 2766^2 + 5355^2 .

It is not a de Polignac number, because 36326781 - 2² = 36326777 is a prime.

It is a super-2 number, since 2×36326781² = 2639270035643922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36326789) 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, 32536 + ... + 33633.

Almost surely, 2^36326781 is an apocalyptic number.

It is an amenable number.

36326781 is a deficient number, since it is larger than the sum of its proper divisors (17006239).

36326781 is a wasteful number, since it uses less digits than its factorization.

36326781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66236 (or 66233 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 36326781 is about 6027.1702315432. The cubic root of 36326781 is about 331.1887977115.

The spelling of 36326781 in words is "thirty-six million, three hundred twenty-six thousand, seven hundred eighty-one".