20144332 has 24 divisors (see below), whose sum is σ = 39964400. Its totient is φ = 8807616.

The previous prime is 20144321. The next prime is 20144347. The reversal of 20144332 is 23344102.

It is a super-4 number, since 4×20144332⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 9207 + ... + 11182.

Almost surely, 2^20144332 is an apocalyptic number.

It is an amenable number.

20144332 is a deficient number, since it is larger than the sum of its proper divisors (19820068).

20144332 is a wasteful number, since it uses less digits than its factorization.

20144332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20425 (or 20423 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20144332 is about 4488.2437545214. The cubic root of 20144332 is about 272.0931594101.

Adding to 20144332 its reverse (23344102), we get a palindrome (43488434).

The spelling of 20144332 in words is "twenty million, one hundred forty-four thousand, three hundred thirty-two".