20532243 has 8 divisors (see below), whose sum is σ = 28986768. Its totient is φ = 12882944.

The previous prime is 20532233. The next prime is 20532263. The reversal of 20532243 is 34223502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20532243 - 2⁴ = 20532227 is a prime.

It is a super-2 number, since 2×20532243² = 843146005222098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20532233) 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 in 7 ways as a sum of consecutive naturals, for example, 201246 + ... + 201347.

It is an arithmetic number, because the mean of its divisors is an integer number (3623346).

Almost surely, 2^20532243 is an apocalyptic number.

20532243 is a deficient number, since it is larger than the sum of its proper divisors (8454525).

20532243 is a wasteful number, since it uses less digits than its factorization.

20532243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402613.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20532243 is about 4531.2518137927. The cubic root of 20532243 is about 273.8285952680.

Adding to 20532243 its reverse (34223502), we get a palindrome (54755745).

The spelling of 20532243 in words is "twenty million, five hundred thirty-two thousand, two hundred forty-three".