20021037 has 8 divisors (see below), whose sum is σ = 26954304. Its totient is φ = 13217568.

The previous prime is 20021021. The next prime is 20021059. The reversal of 20021037 is 73012002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20021037 - 2⁴ = 20021021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32088 + ... + 32705.

It is an arithmetic number, because the mean of its divisors is an integer number (3369288).

Almost surely, 2^20021037 is an apocalyptic number.

It is an amenable number.

20021037 is a deficient number, since it is larger than the sum of its proper divisors (6933267).

20021037 is a wasteful number, since it uses less digits than its factorization.

20021037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64899.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20021037 is about 4474.4873449368. The cubic root of 20021037 is about 271.5369003158.

Adding to 20021037 its reverse (73012002), we get a palindrome (93033039).

The spelling of 20021037 in words is "twenty million, twenty-one thousand, thirty-seven".