39681012 has 24 divisors (see below), whose sum is σ = 105816256. Its totient is φ = 11337408.

The previous prime is 39681011. The next prime is 39681017. The reversal of 39681012 is 21018693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39681011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236113 + ... + 236280.

Almost surely, 2^39681012 is an apocalyptic number.

It is an amenable number.

39681012 is an abundant number, since it is smaller than the sum of its proper divisors (66135244).

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

39681012 is a wasteful number, since it uses less digits than its factorization.

39681012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472407 (or 472405 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 39681012 is about 6299.2866262776. The cubic root of 39681012 is about 341.0836589515.

The spelling of 39681012 in words is "thirty-nine million, six hundred eighty-one thousand, twelve".