144028778 has 16 divisors (see below), whose sum is σ = 227819520. Its totient is φ = 68102496.

The previous prime is 144028757. The next prime is 144028793. The reversal of 144028778 is 877820441.

It is a happy number.

It is an unprimeable number.

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, 20375 + ... + 26517.

It is an arithmetic number, because the mean of its divisors is an integer number (14238720).

Almost surely, 2^144028778 is an apocalyptic number.

144028778 is a deficient number, since it is larger than the sum of its proper divisors (83790742).

144028778 is a wasteful number, since it uses less digits than its factorization.

144028778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781.

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 144028778 is about 12001.1990234310. The cubic root of 144028778 is about 524.1831930419.

The spelling of 144028778 in words is "one hundred forty-four million, twenty-eight thousand, seven hundred seventy-eight".