144220620 has 24 divisors (see below), whose sum is σ = 403817904. Its totient is φ = 38458816.

The previous prime is 144220613. The next prime is 144220679. The reversal of 144220620 is 26022441.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201779 + ... + 1201898.

It is an arithmetic number, because the mean of its divisors is an integer number (16825746).

Almost surely, 2^144220620 is an apocalyptic number.

144220620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144220620 is an abundant number, since it is smaller than the sum of its proper divisors (259597284).

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

144220620 is a wasteful number, since it uses less digits than its factorization.

144220620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403689 (or 2403687 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 144220620 is about 12009.1889817756. The cubic root of 144220620 is about 524.4158218696.

The spelling of 144220620 in words is "one hundred forty-four million, two hundred twenty thousand, six hundred twenty".