39720068 has 12 divisors (see below), whose sum is σ = 70199052. Its totient is φ = 19663200.

The previous prime is 39720059. The next prime is 39720071. The reversal of 39720068 is 86002793.

It can be written as a sum of positive squares in 2 ways, for example, as 32058244 + 7661824 = 5662^2 + 2768^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48755 + ... + 49562.

It is an arithmetic number, because the mean of its divisors is an integer number (5849921).

Almost surely, 2^39720068 is an apocalyptic number.

It is an amenable number.

39720068 is a deficient number, since it is larger than the sum of its proper divisors (30478984).

39720068 is a wasteful number, since it uses less digits than its factorization.

39720068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98422 (or 98420 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 39720068 is about 6302.3858974201. The cubic root of 39720068 is about 341.1955260183.

The spelling of 39720068 in words is "thirty-nine million, seven hundred twenty thousand, sixty-eight".