144424644 has 48 divisors (see below), whose sum is σ = 414761088. Its totient is φ = 38089728.

The previous prime is 144424633. The next prime is 144424649. The reversal of 144424644 is 446424441.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (144424649) 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, 65037 + ... + 67220.

It is an arithmetic number, because the mean of its divisors is an integer number (8640856).

Almost surely, 2^144424644 is an apocalyptic number.

144424644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

144424644 is an abundant number, since it is smaller than the sum of its proper divisors (270336444).

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

144424644 is a wasteful number, since it uses less digits than its factorization.

144424644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132284 (or 132282 counting only the distinct ones).

The product of its digits is 49152, while the sum is 33.

The square root of 144424644 is about 12017.6804750334. The cubic root of 144424644 is about 524.6629964182.

The spelling of 144424644 in words is "one hundred forty-four million, four hundred twenty-four thousand, six hundred forty-four".