20504152 has 16 divisors (see below), whose sum is σ = 39097800. Its totient is φ = 10078080.

The previous prime is 20504147. The next prime is 20504153. The reversal of 20504152 is 25140502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504153) 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, 21249 + ... + 22192.

Almost surely, 2^20504152 is an apocalyptic number.

It is an amenable number.

20504152 is a deficient number, since it is larger than the sum of its proper divisors (18593648).

20504152 is a wasteful number, since it uses less digits than its factorization.

20504152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43506 (or 43502 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 20504152 is about 4528.1510575510. The cubic root of 20504152 is about 273.7036595802.

Adding to 20504152 its reverse (25140502), we get a palindrome (45644654).

The spelling of 20504152 in words is "twenty million, five hundred four thousand, one hundred fifty-two".