144280445 has 16 divisors (see below), whose sum is σ = 184301568. Its totient is φ = 108053760.

The previous prime is 144280441. The next prime is 144280447. The reversal of 144280445 is 544082441.

It is not a de Polignac number, because 144280445 - 2² = 144280441 is a prime.

It is a super-4 number, since 4×144280445⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144280441) 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, 11792 + ... + 20678.

It is an arithmetic number, because the mean of its divisors is an integer number (11518848).

Almost surely, 2^144280445 is an apocalyptic number.

It is an amenable number.

144280445 is a deficient number, since it is larger than the sum of its proper divisors (40021123).

144280445 is a wasteful number, since it uses less digits than its factorization.

144280445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9100.

The product of its (nonzero) digits is 20480, while the sum is 32.

The square root of 144280445 is about 12011.6795245294. The cubic root of 144280445 is about 524.4883238450.

The spelling of 144280445 in words is "one hundred forty-four million, two hundred eighty thousand, four hundred forty-five".