3723920 has 20 divisors (see below), whose sum is σ = 8658300. Its totient is φ = 1489536.

The previous prime is 3723913. The next prime is 3723931. The reversal of 3723920 is 293273.

It can be written as a sum of positive squares in 2 ways, for example, as 2715904 + 1008016 = 1648^2 + 1004^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 3723920.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23195 + ... + 23354.

It is an arithmetic number, because the mean of its divisors is an integer number (432915).

Almost surely, 2^3723920 is an apocalyptic number.

It is an amenable number.

3723920 is an abundant number, since it is smaller than the sum of its proper divisors (4934380).

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

3723920 is a wasteful number, since it uses less digits than its factorization.

3723920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46562 (or 46556 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 3723920 is about 1929.7460972884. The cubic root of 3723920 is about 155.0006243471. Note that the first 3 decimals are identical.

The spelling of 3723920 in words is "three million, seven hundred twenty-three thousand, nine hundred twenty".