20508452 has 12 divisors (see below), whose sum is σ = 37127580. Its totient is φ = 9900576.

The previous prime is 20508451. The next prime is 20508473. The reversal of 20508452 is 25480502.

It can be written as a sum of positive squares in 2 ways, for example, as 5885476 + 14622976 = 2426^2 + 3824^2 .

It is not an unprimeable number, because it can be changed into a prime (20508451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88283 + ... + 88514.

It is an arithmetic number, because the mean of its divisors is an integer number (3093965).

Almost surely, 2^20508452 is an apocalyptic number.

It is an amenable number.

20508452 is a deficient number, since it is larger than the sum of its proper divisors (16619128).

20508452 is a wasteful number, since it uses less digits than its factorization.

20508452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176830 (or 176828 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 20508452 is about 4528.6258401418. The cubic root of 20508452 is about 273.7227913715.

Adding to 20508452 its reverse (25480502), we get a palindrome (45988954).

The spelling of 20508452 in words is "twenty million, five hundred eight thousand, four hundred fifty-two".