20144673 has 8 divisors (see below), whose sum is σ = 29844000. Its totient is φ = 13429764.

The previous prime is 20144671. The next prime is 20144737. The reversal of 20144673 is 37644102.

It is not a de Polignac number, because 20144673 - 2¹ = 20144671 is a prime.

It is a super-3 number, since 3×20144673³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 746099 = 20144673 / (2 + 0 + 1 + 4 + 4 + 6 + 7 + 3).

It is not an unprimeable number, because it can be changed into a prime (20144671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373023 + ... + 373076.

It is an arithmetic number, because the mean of its divisors is an integer number (3730500).

Almost surely, 2^20144673 is an apocalyptic number.

It is an amenable number.

20144673 is a deficient number, since it is larger than the sum of its proper divisors (9699327).

20144673 is an equidigital number, since it uses as much as digits as its factorization.

20144673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746108 (or 746102 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20144673 is about 4488.2817424934. The cubic root of 20144673 is about 272.0946947178.

Adding to 20144673 its reverse (37644102), we get a palindrome (57788775).

The spelling of 20144673 in words is "twenty million, one hundred forty-four thousand, six hundred seventy-three".