20144330 has 16 divisors (see below), whose sum is σ = 36313704. Its totient is φ = 8045760.

The previous prime is 20144321. The next prime is 20144347. The reversal of 20144330 is 3344102.

It can be written as a sum of positive squares in 4 ways, for example, as 14205361 + 5938969 = 3769^2 + 2437^2 .

It is a super-2 number, since 2×20144330² = 811588062297800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20144299 and 20144308.

It is an unprimeable number.

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, 9224 + ... + 11196.

Almost surely, 2^20144330 is an apocalyptic number.

20144330 is a deficient number, since it is larger than the sum of its proper divisors (16169374).

20144330 is a wasteful number, since it uses less digits than its factorization.

20144330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20144330 is about 4488.2435317171. The cubic root of 20144330 is about 272.0931504053.

Adding to 20144330 its reverse (3344102), we get a palindrome (23488432).

The spelling of 20144330 in words is "twenty million, one hundred forty-four thousand, three hundred thirty".