144451644 has 12 divisors (see below), whose sum is σ = 337053864. Its totient is φ = 48150544.

The previous prime is 144451631. The next prime is 144451667. The reversal of 144451644 is 446154441.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6018807 + ... + 6018830.

It is an arithmetic number, because the mean of its divisors is an integer number (28087822).

Almost surely, 2^144451644 is an apocalyptic number.

It is an amenable number.

144451644 is an abundant number, since it is smaller than the sum of its proper divisors (192602220).

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

144451644 is a wasteful number, since it uses less digits than its factorization.

144451644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12037644 (or 12037642 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 144451644 is about 12018.8037674304. The cubic root of 144451644 is about 524.6956894034.

The spelling of 144451644 in words is "one hundred forty-four million, four hundred fifty-one thousand, six hundred forty-four".