20570052 has 12 divisors (see below), whose sum is σ = 47996816. Its totient is φ = 6856680.

The previous prime is 20570041. The next prime is 20570057. The reversal of 20570052 is 25007502.

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 (20570057) 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, 857074 + ... + 857097.

Almost surely, 2^20570052 is an apocalyptic number.

It is an amenable number.

20570052 is an abundant number, since it is smaller than the sum of its proper divisors (27426764).

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

20570052 is a wasteful number, since it uses less digits than its factorization.

20570052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714178 (or 1714176 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 20570052 is about 4535.4219208360. The cubic root of 20570052 is about 273.9965723193.

Adding to 20570052 its reverse (25007502), we get a palindrome (45577554).

The spelling of 20570052 in words is "twenty million, five hundred seventy thousand, fifty-two".