3720404 has 6 divisors (see below), whose sum is σ = 6510714. Its totient is φ = 1860200.

The previous prime is 3720401. The next prime is 3720407. The reversal of 3720404 is 4040273.

It is a happy number.

3720404 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3720401) and next prime (3720407).

It can be written as a sum of positive squares in only one way, i.e., 2402500 + 1317904 = 1550^2 + 1148^2 .

3720404 is a modest number, since divided by 404 gives 372 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465047 + ... + 465054.

It is an arithmetic number, because the mean of its divisors is an integer number (1085119).

Almost surely, 2^3720404 is an apocalyptic number.

It is an amenable number.

3720404 is a deficient number, since it is larger than the sum of its proper divisors (2790310).

3720404 is a wasteful number, since it uses less digits than its factorization.

3720404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930105 (or 930103 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 3720404 is about 1928.8348814764. The cubic root of 3720404 is about 154.9518268610.

Adding to 3720404 its reverse (4040273), we get a palindrome (7760677).

The spelling of 3720404 in words is "three million, seven hundred twenty thousand, four hundred four".