20332047 has 4 divisors (see below), whose sum is σ = 27109400. Its totient is φ = 13554696.

The previous prime is 20332043. The next prime is 20332079. The reversal of 20332047 is 74023302.

It is a happy number.

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

It is not a de Polignac number, because 20332047 - 2² = 20332043 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 (20332043) 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, 3388672 + ... + 3388677.

It is an arithmetic number, because the mean of its divisors is an integer number (6777350).

Almost surely, 2^20332047 is an apocalyptic number.

20332047 is a deficient number, since it is larger than the sum of its proper divisors (6777353).

20332047 is an equidigital number, since it uses as much as digits as its factorization.

20332047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777352.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 20332047 is about 4509.1071178228. The cubic root of 20332047 is about 272.9357145794.

Adding to 20332047 its reverse (74023302), we get a palindrome (94355349).

The spelling of 20332047 in words is "twenty million, three hundred thirty-two thousand, forty-seven".