144390024 has 24 divisors (see below), whose sum is σ = 391056510. Its totient is φ = 48129984.

The previous prime is 144390023. The next prime is 144390031. The reversal of 144390024 is 420093441.

It can be written as a sum of positive squares in only one way, i.e., 74132100 + 70257924 = 8610^2 + 8382^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 144390024.

It is not an unprimeable number, because it can be changed into a prime (144390023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1002637 + ... + 1002780.

Almost surely, 2^144390024 is an apocalyptic number.

It is an amenable number.

144390024 is an abundant number, since it is smaller than the sum of its proper divisors (246666486).

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

144390024 is a wasteful number, since it uses less digits than its factorization.

144390024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005429 (or 2005422 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 144390024 is about 12016.2400109186. The cubic root of 144390024 is about 524.6210707838.

The spelling of 144390024 in words is "one hundred forty-four million, three hundred ninety thousand, twenty-four".