3721288 has 8 divisors (see below), whose sum is σ = 6977430. Its totient is φ = 1860640.

The previous prime is 3721279. The next prime is 3721297. The reversal of 3721288 is 8821273.

3721288 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 (3721279) and next prime (3721297).

It can be written as a sum of positive squares in only one way, i.e., 3617604 + 103684 = 1902^2 + 322^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232573 + ... + 232588.

Almost surely, 2^3721288 is an apocalyptic number.

It is an amenable number.

3721288 is a deficient number, since it is larger than the sum of its proper divisors (3256142).

3721288 is a wasteful number, since it uses less digits than its factorization.

3721288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465167 (or 465163 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 3721288 is about 1929.0640217473. The cubic root of 3721288 is about 154.9640985182.

The spelling of 3721288 in words is "three million, seven hundred twenty-one thousand, two hundred eighty-eight".