39681696 has 48 divisors (see below), whose sum is σ = 104606208. Its totient is φ = 13171200.

The previous prime is 39681673. The next prime is 39681701. The reversal of 39681696 is 69618693.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 26241 + ... + 27711.

It is an arithmetic number, because the mean of its divisors is an integer number (2179296).

Almost surely, 2^39681696 is an apocalyptic number.

It is an amenable number.

39681696 is an abundant number, since it is smaller than the sum of its proper divisors (64924512).

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

39681696 is a wasteful number, since it uses less digits than its factorization.

39681696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765 (or 1757 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The square root of 39681696 is about 6299.3409179056. The cubic root of 39681696 is about 341.0856187460.

The spelling of 39681696 in words is "thirty-nine million, six hundred eighty-one thousand, six hundred ninety-six".