144221880 has 128 divisors (see below), whose sum is σ = 499841280. Its totient is φ = 32901120.

The previous prime is 144221849. The next prime is 144221963. The reversal of 144221880 is 88122441.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19227 + ... + 25653.

It is an arithmetic number, because the mean of its divisors is an integer number (3905010).

Almost surely, 2^144221880 is an apocalyptic number.

144221880 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 144221880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249920640).

144221880 is an abundant number, since it is smaller than the sum of its proper divisors (355619400).

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

144221880 is a wasteful number, since it uses less digits than its factorization.

144221880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6469 (or 6465 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 144221880 is about 12009.2414414900. The cubic root of 144221880 is about 524.4173490715.

The spelling of 144221880 in words is "one hundred forty-four million, two hundred twenty-one thousand, eight hundred eighty".