3144420 has 72 divisors (see below), whose sum is σ = 9906624. Its totient is φ = 837216.

The previous prime is 3144419. The next prime is 3144431. The reversal of 3144420 is 244413.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3144393 and 3144402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4537 + ... + 5183.

It is an arithmetic number, because the mean of its divisors is an integer number (137592).

Almost surely, 2^3144420 is an apocalyptic number.

3144420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3144420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4953312).

3144420 is an abundant number, since it is smaller than the sum of its proper divisors (6762204).

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

3144420 is a wasteful number, since it uses less digits than its factorization.

3144420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 3144420 is about 1773.2512512332. The cubic root of 3144420 is about 146.5031119872.

Adding to 3144420 its reverse (244413), we get a palindrome (3388833).

The spelling of 3144420 in words is "three million, one hundred forty-four thousand, four hundred twenty".