3721824 has 36 divisors (see below), whose sum is σ = 10584756. Its totient is φ = 1240512.

The previous prime is 3721813. The next prime is 3721847. The reversal of 3721824 is 4281273.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6174 + ... + 6749.

It is an arithmetic number, because the mean of its divisors is an integer number (294021).

Almost surely, 2^3721824 is an apocalyptic number.

It is an amenable number.

3721824 is an abundant number, since it is smaller than the sum of its proper divisors (6862932).

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

3721824 is a wasteful number, since it uses less digits than its factorization.

3721824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12939 (or 12928 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 3721824 is about 1929.2029442233. The cubic root of 3721824 is about 154.9715383051.

The spelling of 3721824 in words is "three million, seven hundred twenty-one thousand, eight hundred twenty-four".