144189472 has 24 divisors (see below), whose sum is σ = 324426816. Its totient is φ = 61795392.

The previous prime is 144189443. The next prime is 144189503. The reversal of 144189472 is 274981441.

144189472 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321628 + ... + 322075.

It is an arithmetic number, because the mean of its divisors is an integer number (13517784).

Almost surely, 2^144189472 is an apocalyptic number.

It is an amenable number.

144189472 is an abundant number, since it is smaller than the sum of its proper divisors (180237344).

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

144189472 is an equidigital number, since it uses as much as digits as its factorization.

144189472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643720 (or 643712 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 144189472 is about 12007.8920714670. The cubic root of 144189472 is about 524.3780656410.

The spelling of 144189472 in words is "one hundred forty-four million, one hundred eighty-nine thousand, four hundred seventy-two".