144221680 has 40 divisors (see below), whose sum is σ = 336331152. Its totient is φ = 57513984.

The previous prime is 144221677. The next prime is 144221683. The reversal of 144221680 is 86122441.

It is an interprime number because it is at equal distance from previous prime (144221677) and next prime (144221683).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144221683) 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, 25687 + ... + 30793.

Almost surely, 2^144221680 is an apocalyptic number.

144221680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144221680 is an abundant number, since it is smaller than the sum of its proper divisors (192109472).

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

144221680 is a wasteful number, since it uses less digits than its factorization.

144221680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473 (or 5467 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 144221680 is about 12009.2331145665. The cubic root of 144221680 is about 524.4171066591.

The spelling of 144221680 in words is "one hundred forty-four million, two hundred twenty-one thousand, six hundred eighty".