145330344 has 72 divisors (see below), whose sum is σ = 399762090. Its totient is φ = 47696448.

The previous prime is 145330333. The next prime is 145330357. The reversal of 145330344 is 443033541.

It can be written as a sum of positive squares in only one way, i.e., 89529444 + 55800900 = 9462^2 + 7470^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×145330344² = 42241817774316672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 495862 + ... + 496154.

Almost surely, 2^145330344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145330344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199881045).

145330344 is an abundant number, since it is smaller than the sum of its proper divisors (254431746).

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

145330344 is a wasteful number, since it uses less digits than its factorization.

145330344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 145330344 is about 12055.3035631626. The cubic root of 145330344 is about 525.7574481564.

Adding to 145330344 its reverse (443033541), we get a palindrome (588363885).

The spelling of 145330344 in words is "one hundred forty-five million, three hundred thirty thousand, three hundred forty-four".