39745216 has 56 divisors (see below), whose sum is σ = 91358720. Its totient is φ = 16803072.

The previous prime is 39745213. The next prime is 39745229. The reversal of 39745216 is 61254793.

39745216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (39745213) by changing a digit.

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, 34831 + ... + 35953.

Almost surely, 2^39745216 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 39745216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45679360).

39745216 is an abundant number, since it is smaller than the sum of its proper divisors (51613504).

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

39745216 is a wasteful number, since it uses less digits than its factorization.

39745216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1211 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 39745216 is about 6304.3806991647. The cubic root of 39745216 is about 341.2675179636.

The spelling of 39745216 in words is "thirty-nine million, seven hundred forty-five thousand, two hundred sixteen".