2144432320 has 56 divisors (see below), whose sum is σ = 5120054784. Its totient is φ = 855484416.

The previous prime is 2144432299. The next prime is 2144432357. The reversal of 2144432320 is 232344412.

It is a happy 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, 113812 + ... + 131308.

Almost surely, 2^2144432320 is an apocalyptic number.

2144432320 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 2144432320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2560027392).

2144432320 is an abundant number, since it is smaller than the sum of its proper divisors (2975622464).

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

2144432320 is a wasteful number, since it uses less digits than its factorization.

2144432320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17897 (or 17887 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2144432320 is about 46308.0157208231. The cubic root of 2144432320 is about 1289.5478093802.

Adding to 2144432320 its reverse (232344412), we get a palindrome (2376776732).

The spelling of 2144432320 in words is "two billion, one hundred forty-four million, four hundred thirty-two thousand, three hundred twenty".