3950732720 has 160 divisors (see below), whose sum is σ = 10450688256. Its totient is φ = 1376179200.

The previous prime is 3950732713. The next prime is 3950732729. The reversal of 3950732720 is 272370593.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3950732729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2180615 + ... + 2182425.

Almost surely, 2^3950732720 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 3950732720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5225344128).

3950732720 is an abundant number, since it is smaller than the sum of its proper divisors (6499955536).

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

3950732720 is a wasteful number, since it uses less digits than its factorization.

3950732720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1933 counting only the distinct ones).

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

The square root of 3950732720 is about 62854.8543869127. The cubic root of 3950732720 is about 1580.8568657765.

It can be divided in two parts, 395073 and 2720, that added together give a palindrome (397793).

The spelling of 3950732720 in words is "three billion, nine hundred fifty million, seven hundred thirty-two thousand, seven hundred twenty".