20021032 has 8 divisors (see below), whose sum is σ = 37539450. Its totient is φ = 10010512.

The previous prime is 20021021. The next prime is 20021059. The reversal of 20021032 is 23012002.

It can be written as a sum of positive squares in only one way, i.e., 20016676 + 4356 = 4474^2 + 66^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251307 + ... + 1251322.

Almost surely, 2^20021032 is an apocalyptic number.

It is an amenable number.

20021032 is a deficient number, since it is larger than the sum of its proper divisors (17518418).

20021032 is a wasteful number, since it uses less digits than its factorization.

20021032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502635 (or 2502631 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20021032 is about 4474.4867862136. The cubic root of 20021032 is about 271.5368777115.

Adding to 20021032 its reverse (23012002), we get a palindrome (43033034).

The spelling of 20021032 in words is "twenty million, twenty-one thousand, thirty-two".