20201973 has 8 divisors (see below), whose sum is σ = 29384736. Its totient is φ = 12243600.

The previous prime is 20201969. The next prime is 20201983. The reversal of 20201973 is 37910202.

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

It is not a de Polignac number, because 20201973 - 2² = 20201969 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201983) 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, 306058 + ... + 306123.

It is an arithmetic number, because the mean of its divisors is an integer number (3673092).

Almost surely, 2^20201973 is an apocalyptic number.

It is an amenable number.

20201973 is a deficient number, since it is larger than the sum of its proper divisors (9182763).

20201973 is a wasteful number, since it uses less digits than its factorization.

20201973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612195.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20201973 is about 4494.6604988586. The cubic root of 20201973 is about 272.3524347636.

It can be divided in two parts, 2020 and 1973, that added together give a palindrome (3993).

The spelling of 20201973 in words is "twenty million, two hundred one thousand, nine hundred seventy-three".