144534220 has 24 divisors (see below), whose sum is σ = 306936000. Its totient is φ = 57163392.

The previous prime is 144534211. The next prime is 144534239. The reversal of 144534220 is 22435441.

It is a happy number.

144534220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38820 + ... + 42379.

It is an arithmetic number, because the mean of its divisors is an integer number (12789000).

Almost surely, 2^144534220 is an apocalyptic number.

144534220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144534220 is an abundant number, since it is smaller than the sum of its proper divisors (162401780).

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

144534220 is a wasteful number, since it uses less digits than its factorization.

144534220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81297 (or 81295 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 144534220 is about 12022.2385602682. The cubic root of 144534220 is about 524.7956513852.

Adding to 144534220 its reverse (22435441), we get a palindrome (166969661).

The spelling of 144534220 in words is "one hundred forty-four million, five hundred thirty-four thousand, two hundred twenty".