20229573 has 16 divisors (see below), whose sum is σ = 33197696. Its totient is φ = 10670400.

The previous prime is 20229571. The next prime is 20229589. The reversal of 20229573 is 37592202.

It is a happy number.

It is not a de Polignac number, because 20229573 - 2¹ = 20229571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20229573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20229571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36778 + ... + 37323.

It is an arithmetic number, because the mean of its divisors is an integer number (2074856).

Almost surely, 2^20229573 is an apocalyptic number.

It is an amenable number.

20229573 is a deficient number, since it is larger than the sum of its proper divisors (12968123).

20229573 is a wasteful number, since it uses less digits than its factorization.

20229573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74124.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 20229573 is about 4497.7297606682. The cubic root of 20229573 is about 272.4764079118.

It can be divided in two parts, 20229 and 573, that added together give a palindrome (20802).

The spelling of 20229573 in words is "twenty million, two hundred twenty-nine thousand, five hundred seventy-three".