144505220 has 24 divisors (see below), whose sum is σ = 307305600. Its totient is φ = 57069792.

The previous prime is 144505187. The next prime is 144505223. The reversal of 144505220 is 22505441.

It is a happy number.

144505220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (144505223) 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, 44150 + ... + 47309.

It is an arithmetic number, because the mean of its divisors is an integer number (12804400).

Almost surely, 2^144505220 is an apocalyptic number.

144505220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144505220 is an abundant number, since it is smaller than the sum of its proper divisors (162800380).

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

144505220 is a wasteful number, since it uses less digits than its factorization.

144505220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91547 (or 91545 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 144505220 is about 12021.0324015868. The cubic root of 144505220 is about 524.7605499126.

The spelling of 144505220 in words is "one hundred forty-four million, five hundred five thousand, two hundred twenty".