3721392 has 60 divisors (see below), whose sum is σ = 10674664. Its totient is φ = 1209600.

The previous prime is 3721391. The next prime is 3721409. The reversal of 3721392 is 2931273.

3721392 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3721391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5892 + ... + 6492.

Almost surely, 2^3721392 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 3721392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5337332).

3721392 is an abundant number, since it is smaller than the sum of its proper divisors (6953272).

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

3721392 is a wasteful number, since it uses less digits than its factorization.

3721392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 649 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 3721392 is about 1929.0909776369. The cubic root of 3721392 is about 154.9655421148.

It can be divided in two parts, 372 and 1392, that added together give a square (1764 = 42²).

The spelling of 3721392 in words is "three million, seven hundred twenty-one thousand, three hundred ninety-two".