20512232 has 16 divisors (see below), whose sum is σ = 41419140. Its totient is φ = 9467136.

The previous prime is 20512223. The next prime is 20512241. The reversal of 20512232 is 23221502.

It is an interprime number because it is at equal distance from previous prime (20512223) and next prime (20512241).

It can be written as a sum of positive squares in 2 ways, for example, as 20484676 + 27556 = 4526^2 + 166^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20512232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98513 + ... + 98720.

Almost surely, 2^20512232 is an apocalyptic number.

It is an amenable number.

20512232 is an abundant number, since it is smaller than the sum of its proper divisors (20906908).

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

20512232 is a wasteful number, since it uses less digits than its factorization.

20512232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197252 (or 197248 counting only the distinct ones).

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

The square root of 20512232 is about 4529.0431660562. The cubic root of 20512232 is about 273.7396073423.

Adding to 20512232 its reverse (23221502), we get a palindrome (43733734).

The spelling of 20512232 in words is "twenty million, five hundred twelve thousand, two hundred thirty-two".