144389828 has 24 divisors (see below), whose sum is σ = 281522304. Its totient is φ = 64234400.

The previous prime is 144389827. The next prime is 144389849. The reversal of 144389828 is 828983441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (144389821) 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 7 ways as a sum of consecutive naturals, for example, 32843 + ... + 36978.

It is an arithmetic number, because the mean of its divisors is an integer number (11730096).

Almost surely, 2^144389828 is an apocalyptic number.

It is an amenable number.

144389828 is a deficient number, since it is larger than the sum of its proper divisors (137132476).

144389828 is a wasteful number, since it uses less digits than its factorization.

144389828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69883 (or 69881 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The square root of 144389828 is about 12016.2318552864. The cubic root of 144389828 is about 524.6208334041.

The spelling of 144389828 in words is "one hundred forty-four million, three hundred eighty-nine thousand, eight hundred twenty-eight".