2144624220 has 72 divisors (see below), whose sum is σ = 6521489520. Its totient is φ = 570481920.

The previous prime is 2144624201. The next prime is 2144624249. The reversal of 2144624220 is 224264412.

2144624220 is a `hidden beast` number, since 2 + 14 + 4 + 624 + 2 + 20 = 666.

It is a congruent number.

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, 59055 + ... + 88185.

Almost surely, 2^2144624220 is an apocalyptic number.

2144624220 is a gapful number since it is divisible by the number (20) 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 2144624220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3260744760).

2144624220 is an abundant number, since it is smaller than the sum of its proper divisors (4376865300).

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

2144624220 is a wasteful number, since it uses less digits than its factorization.

2144624220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29555 (or 29550 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 2144624220 is about 46310.0876699667. The cubic root of 2144624220 is about 1289.5862743920.

Adding to 2144624220 its reverse (224264412), we get a palindrome (2368888632).

The spelling of 2144624220 in words is "two billion, one hundred forty-four million, six hundred twenty-four thousand, two hundred twenty".