20144270 has 16 divisors (see below), whose sum is σ = 37510560. Its totient is φ = 7779744.

The previous prime is 20144261. The next prime is 20144273. The reversal of 20144270 is 7244102.

It is a super-2 number, since 2×20144270² = 811583227665800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144273) 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, 34442 + ... + 35021.

It is an arithmetic number, because the mean of its divisors is an integer number (2344410).

Almost surely, 2^20144270 is an apocalyptic number.

20144270 is a deficient number, since it is larger than the sum of its proper divisors (17366290).

20144270 is a wasteful number, since it uses less digits than its factorization.

20144270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69499.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 20144270 is about 4488.2368475828. The cubic root of 20144270 is about 272.0928802614.

Adding to 20144270 its reverse (7244102), we get a palindrome (27388372).

The spelling of 20144270 in words is "twenty million, one hundred forty-four thousand, two hundred seventy".