39680000 has 120 divisors (see below), whose sum is σ = 102342240. Its totient is φ = 15360000.

The previous prime is 39679993. The next prime is 39680009. The reversal of 39680000 is 8693.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39680009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1279985 + ... + 1280015.

It is an arithmetic number, because the mean of its divisors is an integer number (852852).

Almost surely, 2^39680000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39680000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51171120).

39680000 is an abundant number, since it is smaller than the sum of its proper divisors (62662240).

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

39680000 is an frugal number, since it uses more digits than its factorization.

39680000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 39680000 is about 6299.2062992094. The cubic root of 39680000 is about 341.0807593313.

Adding to 39680000 its reverse (8693), we get a palindrome (39688693).

The spelling of 39680000 in words is "thirty-nine million, six hundred eighty thousand".