20373329 has 4 divisors (see below), whose sum is σ = 20707380. Its totient is φ = 20039280.

The previous prime is 20373323. The next prime is 20373371. The reversal of 20373329 is 92337302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9985600 + 10387729 = 3160^2 + 3223^2 .

It is a cyclic number.

It is not a de Polignac number, because 20373329 - 2¹² = 20369233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20373323) 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, 166934 + ... + 167055.

It is an arithmetic number, because the mean of its divisors is an integer number (5176845).

Almost surely, 2^20373329 is an apocalyptic number.

It is an amenable number.

20373329 is a deficient number, since it is larger than the sum of its proper divisors (334051).

20373329 is an equidigital number, since it uses as much as digits as its factorization.

20373329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334050.

The product of its (nonzero) digits is 6804, while the sum is 29.

The square root of 20373329 is about 4513.6824212609. The cubic root of 20373329 is about 273.1203117502.

It can be divided in two parts, 20373 and 329, that added together give a palindrome (20702).

The spelling of 20373329 in words is "twenty million, three hundred seventy-three thousand, three hundred twenty-nine".