20506052 has 24 divisors (see below), whose sum is σ = 41272896. Its totient is φ = 8732448.

The previous prime is 20506051. The next prime is 20506067. The reversal of 20506052 is 25060502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20506051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2318 + ... + 6810.

It is an arithmetic number, because the mean of its divisors is an integer number (1719704).

Almost surely, 2^20506052 is an apocalyptic number.

It is an amenable number.

20506052 is an abundant number, since it is smaller than the sum of its proper divisors (20766844).

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

20506052 is a wasteful number, since it uses less digits than its factorization.

20506052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667 (or 4665 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20506052 is about 4528.3608513457. The cubic root of 20506052 is about 273.7121134922.

Adding to 20506052 its reverse (25060502), we get a palindrome (45566554).

The spelling of 20506052 in words is "twenty million, five hundred six thousand, fifty-two".