20504454 has 32 divisors (see below), whose sum is σ = 44181504. Its totient is φ = 6325440.

The previous prime is 20504453. The next prime is 20504461. The reversal of 20504454 is 45440502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1882 + ... + 6674.

It is an arithmetic number, because the mean of its divisors is an integer number (1380672).

Almost surely, 2^20504454 is an apocalyptic number.

20504454 is an abundant number, since it is smaller than the sum of its proper divisors (23677050).

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

20504454 is a wasteful number, since it uses less digits than its factorization.

20504454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 20504454 is about 4528.1844043722. The cubic root of 20504454 is about 273.7050033421.

Adding to 20504454 its reverse (45440502), we get a palindrome (65944956).

The spelling of 20504454 in words is "twenty million, five hundred four thousand, four hundred fifty-four".