144403818 has 32 divisors (see below), whose sum is σ = 321753600. Its totient is φ = 42899136.

The previous prime is 144403817. The next prime is 144403823. The reversal of 144403818 is 818304441.

It is not an unprimeable number, because it can be changed into a prime (144403817) 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, 29658 + ... + 34181.

It is an arithmetic number, because the mean of its divisors is an integer number (10054800).

Almost surely, 2^144403818 is an apocalyptic number.

144403818 is an abundant number, since it is smaller than the sum of its proper divisors (177349782).

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

144403818 is a wasteful number, since it uses less digits than its factorization.

144403818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63886.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 144403818 is about 12016.8139704333. The cubic root of 144403818 is about 524.6377764453.

The spelling of 144403818 in words is "one hundred forty-four million, four hundred three thousand, eight hundred eighteen".