39745730 has 16 divisors (see below), whose sum is σ = 71737920. Its totient is φ = 15854832.

The previous prime is 39745721. The next prime is 39745781. The reversal of 39745730 is 3754793.

39745730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454 + ... + 9033.

It is an arithmetic number, because the mean of its divisors is an integer number (4483620).

Almost surely, 2^39745730 is an apocalyptic number.

39745730 is a deficient number, since it is larger than the sum of its proper divisors (31992190).

39745730 is a wasteful number, since it uses less digits than its factorization.

39745730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10873.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 39745730 is about 6304.4214643375. The cubic root of 39745730 is about 341.2689890903.

The spelling of 39745730 in words is "thirty-nine million, seven hundred forty-five thousand, seven hundred thirty".