144191238 has 16 divisors (see below), whose sum is σ = 288622656. Its totient is φ = 48023720.

The previous prime is 144191231. The next prime is 144191287. The reversal of 144191238 is 832191441.

It is a happy number.

It is a super-2 number, since 2×144191238² = 41582226231945288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144191199 and 144191208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144191231) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1668 + ... + 17063.

It is an arithmetic number, because the mean of its divisors is an integer number (18038916).

Almost surely, 2^144191238 is an apocalyptic number.

144191238 is an abundant number, since it is smaller than the sum of its proper divisors (144431418).

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

144191238 is a wasteful number, since it uses less digits than its factorization.

144191238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20019.

The product of its digits is 6912, while the sum is 33.

The square root of 144191238 is about 12007.9656062132. The cubic root of 144191238 is about 524.3802064535.

The spelling of 144191238 in words is "one hundred forty-four million, one hundred ninety-one thousand, two hundred thirty-eight".