3144220 has 12 divisors (see below), whose sum is σ = 6602904. Its totient is φ = 1257680.

The previous prime is 3144217. The next prime is 3144221. The reversal of 3144220 is 224413.

It is a super-2 number, since 2×3144220² = 19772238816800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3144194 and 3144203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3144221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78586 + ... + 78625.

It is an arithmetic number, because the mean of its divisors is an integer number (550242).

Almost surely, 2^3144220 is an apocalyptic number.

It is an amenable number.

3144220 is an abundant number, since it is smaller than the sum of its proper divisors (3458684).

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

3144220 is a wasteful number, since it uses less digits than its factorization.

3144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157220 (or 157218 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 3144220 is about 1773.1948567487. The cubic root of 3144220 is about 146.5000058242.

Adding to 3144220 its reverse (224413), we get a palindrome (3368633).

It can be divided in two parts, 3144 and 220, that added together give a square (3364 = 58²).

The spelling of 3144220 in words is "three million, one hundred forty-four thousand, two hundred twenty".