144890638 has 16 divisors (see below), whose sum is σ = 223146000. Its totient is φ = 70516800.

The previous prime is 144890611. The next prime is 144890651. The reversal of 144890638 is 836098441.

It is a junction number, because it is equal to n+sod(n) for n = 144890594 and 144890603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39148 + ... + 42688.

It is an arithmetic number, because the mean of its divisors is an integer number (13946625).

Almost surely, 2^144890638 is an apocalyptic number.

144890638 is a deficient number, since it is larger than the sum of its proper divisors (78255362).

144890638 is a wasteful number, since it uses less digits than its factorization.

144890638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 144890638 is about 12037.0527123545. The cubic root of 144890638 is about 525.2266752076.

The spelling of 144890638 in words is "one hundred forty-four million, eight hundred ninety thousand, six hundred thirty-eight".