20355252 has 48 divisors (see below), whose sum is σ = 48771072. Its totient is φ = 6605920.

The previous prime is 20355241. The next prime is 20355271. The reversal of 20355252 is 25255302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106477 + ... + 106667.

It is an arithmetic number, because the mean of its divisors is an integer number (1016064).

Almost surely, 2^20355252 is an apocalyptic number.

It is an amenable number.

20355252 is an abundant number, since it is smaller than the sum of its proper divisors (28415820).

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

20355252 is a wasteful number, since it uses less digits than its factorization.

20355252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 20355252 is about 4511.6795098943. The cubic root of 20355252 is about 273.0395091016.

It can be divided in two parts, 203 and 55252, that added together give a palindrome (55455).

The spelling of 20355252 in words is "twenty million, three hundred fifty-five thousand, two hundred fifty-two".