144428636 has 12 divisors (see below), whose sum is σ = 275727480. Its totient is φ = 65649360.

The previous prime is 144428629. The next prime is 144428677. The reversal of 144428636 is 636824441.

144428636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 144428636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641191 + ... + 1641278.

It is an arithmetic number, because the mean of its divisors is an integer number (22977290).

Almost surely, 2^144428636 is an apocalyptic number.

It is an amenable number.

144428636 is a deficient number, since it is larger than the sum of its proper divisors (131298844).

144428636 is a wasteful number, since it uses less digits than its factorization.

144428636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282484 (or 3282482 counting only the distinct ones).

The product of its digits is 110592, while the sum is 38.

The square root of 144428636 is about 12017.8465625086. The cubic root of 144428636 is about 524.6678303933.

The spelling of 144428636 in words is "one hundred forty-four million, four hundred twenty-eight thousand, six hundred thirty-six".