20001332 has 12 divisors (see below), whose sum is σ = 37694916. Its totient is φ = 9231360.

The previous prime is 20001307. The next prime is 20001341. The reversal of 20001332 is 23310002.

It can be written as a sum of positive squares in 2 ways, for example, as 4351396 + 15649936 = 2086^2 + 3956^2 .

20001332 is a modest number, since divided by 1332 gives 20 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192269 + ... + 192372.

It is an arithmetic number, because the mean of its divisors is an integer number (3141243).

Almost surely, 2^20001332 is an apocalyptic number.

It is an amenable number.

20001332 is a deficient number, since it is larger than the sum of its proper divisors (17693584).

20001332 is a wasteful number, since it uses less digits than its factorization.

20001332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384658 (or 384656 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20001332 is about 4472.2848746474. The cubic root of 20001332 is about 271.4477875328.

Adding to 20001332 its reverse (23310002), we get a palindrome (43311334).

The spelling of 20001332 in words is "twenty million, one thousand, three hundred thirty-two".