20252504 has 8 divisors (see below), whose sum is σ = 37973460. Its totient is φ = 10126248.

The previous prime is 20252503. The next prime is 20252509. The reversal of 20252504 is 40525202.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20252501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265774 + ... + 1265789.

Almost surely, 2^20252504 is an apocalyptic number.

It is an amenable number.

20252504 is a deficient number, since it is larger than the sum of its proper divisors (17720956).

20252504 is a wasteful number, since it uses less digits than its factorization.

20252504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531569 (or 2531565 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 20252504 is about 4500.2782136219. The cubic root of 20252504 is about 272.5793232024.

Adding to 20252504 its reverse (40525202), we get a palindrome (60777706).

The spelling of 20252504 in words is "twenty million, two hundred fifty-two thousand, five hundred four".