3901722220 has 96 divisors (see below), whose sum is σ = 9137189376. Its totient is φ = 1387584000.

The previous prime is 3901722179. The next prime is 3901722221. The reversal of 3901722220 is 222271093.

It is not an unprimeable number, because it can be changed into a prime (3901722221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2224864 + ... + 2226616.

It is an arithmetic number, because the mean of its divisors is an integer number (95179056).

Almost surely, 2^3901722220 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 3901722220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4568594688).

3901722220 is an abundant number, since it is smaller than the sum of its proper divisors (5235467156).

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

3901722220 is a wasteful number, since it uses less digits than its factorization.

3901722220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 3901722220 is about 62463.7672575070. The cubic root of 3901722220 is about 1574.2925816103.

The spelling of 3901722220 in words is "three billion, nine hundred one million, seven hundred twenty-two thousand, two hundred twenty".