20504466 has 24 divisors (see below), whose sum is σ = 44626140. Its totient is φ = 6804096.

The previous prime is 20504461. The next prime is 20504501. The reversal of 20504466 is 66440502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20439441 + 65025 = 4521^2 + 255^2 .

It is not an unprimeable number, because it can be changed into a prime (20504461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1750 + ... + 6638.

Almost surely, 2^20504466 is an apocalyptic number.

20504466 is an abundant number, since it is smaller than the sum of its proper divisors (24121674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20504466 is a wasteful number, since it uses less digits than its factorization.

20504466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5130 (or 5127 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20504466 is about 4528.1857294064. The cubic root of 20504466 is about 273.7050567364.

Adding to 20504466 its reverse (66440502), we get a palindrome (86944968).

The spelling of 20504466 in words is "twenty million, five hundred four thousand, four hundred sixty-six".