144904638 has 16 divisors (see below), whose sum is σ = 293066640. Its totient is φ = 47758656.

The previous prime is 144904609. The next prime is 144904657. The reversal of 144904638 is 836409441.

It is a happy number.

144904638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×144904638² = 41994708227822088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144904596 and 144904605.

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, 135145 + ... + 136212.

It is an arithmetic number, because the mean of its divisors is an integer number (18316665).

Almost surely, 2^144904638 is an apocalyptic number.

144904638 is an abundant number, since it is smaller than the sum of its proper divisors (148162002).

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

144904638 is a wasteful number, since it uses less digits than its factorization.

144904638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271451.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 144904638 is about 12037.6342360117. The cubic root of 144904638 is about 525.2435912686.

The spelling of 144904638 in words is "one hundred forty-four million, nine hundred four thousand, six hundred thirty-eight".