1144442320 has 40 divisors (see below), whose sum is σ = 3040948224. Its totient is φ = 392380032.

The previous prime is 1144442317. The next prime is 1144442323. The reversal of 1144442320 is 232444411.

It is an interprime number because it is at equal distance from previous prime (1144442317) and next prime (1144442323).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144442323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021264 + ... + 1022383.

Almost surely, 2^1144442320 is an apocalyptic number.

1144442320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144442320 is an abundant number, since it is smaller than the sum of its proper divisors (1896505904).

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

1144442320 is a wasteful number, since it uses less digits than its factorization.

1144442320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043667 (or 2043661 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1144442320 is about 33829.6071511332. The cubic root of 1144442320 is about 1045.9990811448. Note that the first 3 decimals are identical.

Adding to 1144442320 its reverse (232444411), we get a palindrome (1376886731).

The spelling of 1144442320 in words is "one billion, one hundred forty-four million, four hundred forty-two thousand, three hundred twenty".