145440344 has 64 divisors (see below), whose sum is σ = 324096000. Its totient is φ = 59875200.

The previous prime is 145440341. The next prime is 145440359. The reversal of 145440344 is 443044541.

145440344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145440341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345254 + ... + 345674.

It is an arithmetic number, because the mean of its divisors is an integer number (5064000).

Almost surely, 2^145440344 is an apocalyptic number.

145440344 is a gapful number since it is divisible by the number (14) 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 145440344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162048000).

145440344 is an abundant number, since it is smaller than the sum of its proper divisors (178655656).

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

145440344 is a wasteful number, since it uses less digits than its factorization.

145440344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 145440344 is about 12059.8650075364. The cubic root of 145440344 is about 525.8900626597.

Adding to 145440344 its reverse (443044541), we get a palindrome (588484885).

The spelling of 145440344 in words is "one hundred forty-five million, four hundred forty thousand, three hundred forty-four".