144445680 has 100 divisors (see below), whose sum is σ = 501703752. Its totient is φ = 38517120.

The previous prime is 144445673. The next prime is 144445699. The reversal of 144445680 is 86544441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4666 + ... + 17625.

Almost surely, 2^144445680 is an apocalyptic number.

144445680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144445680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250851876).

144445680 is an abundant number, since it is smaller than the sum of its proper divisors (357258072).

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

144445680 is a wasteful number, since it uses less digits than its factorization.

144445680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22316 (or 22301 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 144445680 is about 12018.5556536549. Note that the first 3 decimals coincide. The cubic root of 144445680 is about 524.6884682368.

The spelling of 144445680 in words is "one hundred forty-four million, four hundred forty-five thousand, six hundred eighty".