20906052 has 12 divisors (see below), whose sum is σ = 48780816. Its totient is φ = 6968680.

The previous prime is 20906051. The next prime is 20906087. The reversal of 20906052 is 25060902.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20906051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871074 + ... + 871097.

It is an arithmetic number, because the mean of its divisors is an integer number (4065068).

Almost surely, 2^20906052 is an apocalyptic number.

It is an amenable number.

20906052 is an abundant number, since it is smaller than the sum of its proper divisors (27874764).

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

20906052 is a wasteful number, since it uses less digits than its factorization.

20906052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742178 (or 1742176 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20906052 is about 4572.3136375363. The cubic root of 20906052 is about 275.4803812982.

Adding to 20906052 its reverse (25060902), we get a palindrome (45966954).

The spelling of 20906052 in words is "twenty million, nine hundred six thousand, fifty-two".