39746240 has 56 divisors (see below), whose sum is σ = 97932240. Its totient is φ = 15346688.

The previous prime is 39746207. The next prime is 39746249. The reversal of 39746240 is 4264793.

39746240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 39746240.

It is not an unprimeable number, because it can be changed into a prime (39746249) 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, 7139 + ... + 11421.

It is an arithmetic number, because the mean of its divisors is an integer number (1748790).

Almost surely, 2^39746240 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 39746240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48966120).

39746240 is an abundant number, since it is smaller than the sum of its proper divisors (58186000).

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

39746240 is a wasteful number, since it uses less digits than its factorization.

39746240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4329 (or 4319 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 39746240 is about 6304.4619120112. The cubic root of 39746240 is about 341.2704487561.

The spelling of 39746240 in words is "thirty-nine million, seven hundred forty-six thousand, two hundred forty".