20329253 has 4 divisors (see below), whose sum is σ = 23233440. Its totient is φ = 17425068.

The previous prime is 20329247. The next prime is 20329277. The reversal of 20329253 is 35292302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20329253 - 2⁴ = 20329237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20329553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1452083 + ... + 1452096.

It is an arithmetic number, because the mean of its divisors is an integer number (5808360).

Almost surely, 2^20329253 is an apocalyptic number.

It is an amenable number.

20329253 is a deficient number, since it is larger than the sum of its proper divisors (2904187).

20329253 is an equidigital number, since it uses as much as digits as its factorization.

20329253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904186.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 20329253 is about 4508.7972897437. The cubic root of 20329253 is about 272.9232118651.

The spelling of 20329253 in words is "twenty million, three hundred twenty-nine thousand, two hundred fifty-three".