3722440 has 32 divisors (see below), whose sum is σ = 8667000. Its totient is φ = 1437184.

The previous prime is 3722437. The next prime is 3722443. The reversal of 3722440 is 442273.

3722440 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 (3722437) and next prime (3722443).

It can be written as a sum of positive squares in 4 ways, for example, as 3104644 + 617796 = 1762^2 + 786^2 .

It is not an unprimeable number, because it can be changed into a prime (3722443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445 + ... + 2764.

Almost surely, 2^3722440 is an apocalyptic number.

It is an amenable number.

3722440 is an abundant number, since it is smaller than the sum of its proper divisors (4944560).

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

3722440 is a wasteful number, since it uses less digits than its factorization.

3722440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249 (or 3245 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 3722440 is about 1929.3625890433. The cubic root of 3722440 is about 154.9800876259.

The spelling of 3722440 in words is "three million, seven hundred twenty-two thousand, four hundred forty".