1214444220 has 96 divisors (see below), whose sum is σ = 3829303296. Its totient is φ = 284908800.

The previous prime is 1214444213. The next prime is 1214444237. The reversal of 1214444220 is 224444121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9219 + ... + 50138.

It is an arithmetic number, because the mean of its divisors is an integer number (39888576).

Almost surely, 2^1214444220 is an apocalyptic number.

1214444220 is a gapful number since it is divisible by the number (10) 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 1214444220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1914651648).

1214444220 is an abundant number, since it is smaller than the sum of its proper divisors (2614859076).

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

1214444220 is a wasteful number, since it uses less digits than its factorization.

1214444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59411 (or 59409 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1214444220 is about 34848.8768829069. The cubic root of 1214444220 is about 1066.9052628151.

Adding to 1214444220 its reverse (224444121), we get a palindrome (1438888341).

Subtracting from 1214444220 its reverse (224444121), we obtain a palindrome (990000099).

The spelling of 1214444220 in words is "one billion, two hundred fourteen million, four hundred forty-four thousand, two hundred twenty".