144244440 has 48 divisors (see below), whose sum is σ = 468795600. Its totient is φ = 38465088.

The previous prime is 144244379. The next prime is 144244469. The reversal of 144244440 is 44442441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199980 + ... + 200699.

It is an arithmetic number, because the mean of its divisors is an integer number (9766575).

Almost surely, 2^144244440 is an apocalyptic number.

144244440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144244440 is an abundant number, since it is smaller than the sum of its proper divisors (324551160).

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

144244440 is a wasteful number, since it uses less digits than its factorization.

144244440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400696 (or 400689 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

The square root of 144244440 is about 12010.1806814053. The cubic root of 144244440 is about 524.4446917525. Note that the first 3 decimals are identical.

Adding to 144244440 its reverse (44442441), we get a palindrome (188686881).

The spelling of 144244440 in words is "one hundred forty-four million, two hundred forty-four thousand, four hundred forty".