144405244 has 24 divisors (see below), whose sum is σ = 271676160. Its totient is φ = 66945456.

The previous prime is 144405203. The next prime is 144405251. The reversal of 144405244 is 442504441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16642 + ... + 23785.

It is an arithmetic number, because the mean of its divisors is an integer number (11319840).

Almost surely, 2^144405244 is an apocalyptic number.

It is an amenable number.

144405244 is a deficient number, since it is larger than the sum of its proper divisors (127270916).

144405244 is a wasteful number, since it uses less digits than its factorization.

144405244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40497 (or 40495 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 144405244 is about 12016.8733038174. The cubic root of 144405244 is about 524.6395033872.

Adding to 144405244 its reverse (442504441), we get a palindrome (586909685).

The spelling of 144405244 in words is "one hundred forty-four million, four hundred five thousand, two hundred forty-four".