144331404 has 48 divisors (see below), whose sum is σ = 386335488. Its totient is φ = 41082048.

The previous prime is 144331403. The next prime is 144331409. The reversal of 144331404 is 404133441.

It is a super-2 number, since 2×144331404² = 41663108361222432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144331403) 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 15 ways as a sum of consecutive naturals, for example, 20167 + ... + 26369.

It is an arithmetic number, because the mean of its divisors is an integer number (8048656).

Almost surely, 2^144331404 is an apocalyptic number.

144331404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

144331404 is an abundant number, since it is smaller than the sum of its proper divisors (242004084).

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

144331404 is a wasteful number, since it uses less digits than its factorization.

144331404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6494 (or 6492 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 144331404 is about 12013.8005643510. The cubic root of 144331404 is about 524.5500653015.

Adding to 144331404 its reverse (404133441), we get a palindrome (548464845).

The spelling of 144331404 in words is "one hundred forty-four million, three hundred thirty-one thousand, four hundred four".