1144423320 has 128 divisors (see below), whose sum is σ = 3558824640. Its totient is φ = 294174720.

The previous prime is 1144423253. The next prime is 1144423337. The reversal of 1144423320 is 233244411.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 500580 + ... + 502860.

Almost surely, 2^1144423320 is an apocalyptic number.

1144423320 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 1144423320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1779412320).

1144423320 is an abundant number, since it is smaller than the sum of its proper divisors (2414401320).

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

1144423320 is a wasteful number, since it uses less digits than its factorization.

1144423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445 (or 2441 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1144423320 is about 33829.3263308627. The cubic root of 1144423320 is about 1045.9932925634.

Adding to 1144423320 its reverse (233244411), we get a palindrome (1377667731).

The spelling of 1144423320 in words is "one billion, one hundred forty-four million, four hundred twenty-three thousand, three hundred twenty".