20204474 has 8 divisors (see below), whose sum is σ = 31351860. Its totient is φ = 9753856.

The previous prime is 20204417. The next prime is 20204477. The reversal of 20204474 is 47440202.

It can be written as a sum of positive squares in 2 ways, for example, as 18983449 + 1221025 = 4357^2 + 1105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20204477) 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 3 ways as a sum of consecutive naturals, for example, 174119 + ... + 174234.

Almost surely, 2^20204474 is an apocalyptic number.

20204474 is a deficient number, since it is larger than the sum of its proper divisors (11147386).

20204474 is a wasteful number, since it uses less digits than its factorization.

20204474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348384.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 20204474 is about 4494.9387092596. The cubic root of 20204474 is about 272.3636733578.

Adding to 20204474 its reverse (47440202), we get a palindrome (67644676).

The spelling of 20204474 in words is "twenty million, two hundred four thousand, four hundred seventy-four".