144213644 has 6 divisors (see below), whose sum is σ = 252373884. Its totient is φ = 72106820.

The previous prime is 144213623. The next prime is 144213659. The reversal of 144213644 is 446312441.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18026702 + ... + 18026709.

It is an arithmetic number, because the mean of its divisors is an integer number (42062314).

Almost surely, 2^144213644 is an apocalyptic number.

It is an amenable number.

144213644 is a deficient number, since it is larger than the sum of its proper divisors (108160240).

144213644 is a wasteful number, since it uses less digits than its factorization.

144213644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36053415 (or 36053413 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 144213644 is about 12008.8985340039. The cubic root of 144213644 is about 524.4073663432.

The spelling of 144213644 in words is "one hundred forty-four million, two hundred thirteen thousand, six hundred forty-four".