36581012 has 24 divisors (see below), whose sum is σ = 70808136. Its totient is φ = 16426368.

The previous prime is 36581009. The next prime is 36581021. The reversal of 36581012 is 21018563.

It can be written as a sum of positive squares in 4 ways, for example, as 51076 + 36529936 = 226^2 + 6044^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7583 + ... + 11430.

It is an arithmetic number, because the mean of its divisors is an integer number (2950339).

Almost surely, 2^36581012 is an apocalyptic number.

It is an amenable number.

36581012 is a deficient number, since it is larger than the sum of its proper divisors (34227124).

36581012 is a wasteful number, since it uses less digits than its factorization.

36581012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19067 (or 19065 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 36581012 is about 6048.2238715180. The cubic root of 36581012 is about 331.9596046076.

Adding to 36581012 its reverse (21018563), we get a palindrome (57599575).

The spelling of 36581012 in words is "thirty-six million, five hundred eighty-one thousand, twelve".