3721872 has 160 divisors (see below), whose sum is σ = 12856320. Its totient is φ = 898560.

The previous prime is 3721859. The next prime is 3721873. The reversal of 3721872 is 2781273.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3721873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70198 + ... + 70250.

It is an arithmetic number, because the mean of its divisors is an integer number (80352).

Almost surely, 2^3721872 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 3721872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6428160).

3721872 is an abundant number, since it is smaller than the sum of its proper divisors (9134448).

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

3721872 is a wasteful number, since it uses less digits than its factorization.

3721872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 95 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 3721872 is about 1929.2153845540. The cubic root of 3721872 is about 154.9722045198.

The spelling of 3721872 in words is "three million, seven hundred twenty-one thousand, eight hundred seventy-two".