3144440 has 32 divisors (see below), whose sum is σ = 7620480. Its totient is φ = 1160832.

The previous prime is 3144431. The next prime is 3144457. The reversal of 3144440 is 444413.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2504 + ... + 3543.

It is an arithmetic number, because the mean of its divisors is an integer number (238140).

Almost surely, 2^3144440 is an apocalyptic number.

It is an amenable number.

3144440 is an abundant number, since it is smaller than the sum of its proper divisors (4476040).

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

3144440 is a wasteful number, since it uses less digits than its factorization.

3144440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071 (or 6067 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 3144440 is about 1773.2568905830. The cubic root of 3144440 is about 146.5034225963.

Adding to 3144440 its reverse (444413), we get a palindrome (3588853).

The spelling of 3144440 in words is "three million, one hundred forty-four thousand, four hundred forty".