20653252 has 24 divisors (see below), whose sum is σ = 37834776. Its totient is φ = 9854208.

The previous prime is 20653229. The next prime is 20653267. The reversal of 20653252 is 25235602.

It can be written as a sum of positive squares in 4 ways, for example, as 5645376 + 15007876 = 2376^2 + 3874^2 .

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 6528 + ... + 9160.

It is an arithmetic number, because the mean of its divisors is an integer number (1576449).

Almost surely, 2^20653252 is an apocalyptic number.

It is an amenable number.

20653252 is a deficient number, since it is larger than the sum of its proper divisors (17181524).

20653252 is a wasteful number, since it uses less digits than its factorization.

20653252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20653252 is about 4544.5849095379. The cubic root of 20653252 is about 274.3654880706.

Adding to 20653252 its reverse (25235602), we get a palindrome (45888854).

The spelling of 20653252 in words is "twenty million, six hundred fifty-three thousand, two hundred fifty-two".