144345220 has 24 divisors (see below), whose sum is σ = 303597504. Its totient is φ = 57648096.

The previous prime is 144345203. The next prime is 144345221. The reversal of 144345220 is 22543441.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (144345221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8377 + ... + 18943.

It is an arithmetic number, because the mean of its divisors is an integer number (12649896).

Almost surely, 2^144345220 is an apocalyptic number.

144345220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144345220 is an abundant number, since it is smaller than the sum of its proper divisors (159252284).

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

144345220 is a wasteful number, since it uses less digits than its factorization.

144345220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11259 (or 11257 counting only the distinct ones).

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

The square root of 144345220 is about 12014.3755559746. The cubic root of 144345220 is about 524.5668021360.

Adding to 144345220 its reverse (22543441), we get a palindrome (166888661).

The spelling of 144345220 in words is "one hundred forty-four million, three hundred forty-five thousand, two hundred twenty".