20450052 has 54 divisors (see below), whose sum is σ = 60138078. Its totient is φ = 5842368.

The previous prime is 20450051. The next prime is 20450057. The reversal of 20450052 is 25005402.

It can be written as a sum of positive squares in only one way, i.e., 20196036 + 254016 = 4494^2 + 504^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20450051) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4033 + ... + 7560.

Almost surely, 2^20450052 is an apocalyptic number.

It is an amenable number.

20450052 is an abundant number, since it is smaller than the sum of its proper divisors (39688026).

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

20450052 is a wasteful number, since it uses less digits than its factorization.

20450052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11617 (or 11605 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 20450052 is about 4522.1733712895. The cubic root of 20450052 is about 273.4627260993.

Adding to 20450052 its reverse (25005402), we get a palindrome (45455454).

The spelling of 20450052 in words is "twenty million, four hundred fifty thousand, fifty-two".