20328479 has 2 divisors, whose sum is σ = 20328480. Its totient is φ = 20328478.

The previous prime is 20328463. The next prime is 20328533. The reversal of 20328479 is 97482302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20328479 - 2⁴ = 20328463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20328419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10164239 + 10164240.

It is an arithmetic number, because the mean of its divisors is an integer number (10164240).

Almost surely, 2^20328479 is an apocalyptic number.

20328479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20328479 is an equidigital number, since it uses as much as digits as its factorization.

20328479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 20328479 is about 4508.7114567246. The cubic root of 20328479 is about 272.9197481332.

It can be divided in two parts, 203 and 28479, that added together give a palindrome (28682).

The spelling of 20328479 in words is "twenty million, three hundred twenty-eight thousand, four hundred seventy-nine".