20432253 has 8 divisors (see below), whose sum is σ = 27649888. Its totient is φ = 13418064.

The previous prime is 20432233. The next prime is 20432261. The reversal of 20432253 is 35223402.

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

It is not a de Polignac number, because 20432253 - 2¹² = 20428157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50626 + ... + 51027.

It is an arithmetic number, because the mean of its divisors is an integer number (3456236).

Almost surely, 2^20432253 is an apocalyptic number.

It is an amenable number.

20432253 is a deficient number, since it is larger than the sum of its proper divisors (7217635).

20432253 is a wasteful number, since it uses less digits than its factorization.

20432253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101723.

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

The square root of 20432253 is about 4520.2049732285. The cubic root of 20432253 is about 273.3833656512.

Adding to 20432253 its reverse (35223402), we get a palindrome (55655655).

The spelling of 20432253 in words is "twenty million, four hundred thirty-two thousand, two hundred fifty-three".