20252132 has 6 divisors (see below), whose sum is σ = 35441238. Its totient is φ = 10126064.

The previous prime is 20252131. The next prime is 20252137. The reversal of 20252132 is 23125202.

It can be written as a sum of positive squares in only one way, i.e., 17774656 + 2477476 = 4216^2 + 1574^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20252132.

It is not an unprimeable number, because it can be changed into a prime (20252131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2531513 + ... + 2531520.

It is an arithmetic number, because the mean of its divisors is an integer number (5906873).

Almost surely, 2^20252132 is an apocalyptic number.

It is an amenable number.

20252132 is a deficient number, since it is larger than the sum of its proper divisors (15189106).

20252132 is a wasteful number, since it uses less digits than its factorization.

20252132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063037 (or 5063035 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20252132 is about 4500.2368826541. The cubic root of 20252132 is about 272.5776542709.

Adding to 20252132 its reverse (23125202), we get a palindrome (43377334).

The spelling of 20252132 in words is "twenty million, two hundred fifty-two thousand, one hundred thirty-two".