20636373 has 16 divisors (see below), whose sum is σ = 28062720. Its totient is φ = 13486704.

The previous prime is 20636333. The next prime is 20636377. The reversal of 20636373 is 37363602.

It is not a de Polignac number, because 20636373 - 2⁶ = 20636309 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20636373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20636377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44340 + ... + 44802.

It is an arithmetic number, because the mean of its divisors is an integer number (1753920).

Almost surely, 2^20636373 is an apocalyptic number.

It is an amenable number.

20636373 is a deficient number, since it is larger than the sum of its proper divisors (7426347).

20636373 is a wasteful number, since it uses less digits than its factorization.

20636373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728.

The product of its (nonzero) digits is 13608, while the sum is 30.

The square root of 20636373 is about 4542.7274846726. The cubic root of 20636373 is about 274.2907253936.

Adding to 20636373 its reverse (37363602), we get a palindrome (57999975).

The spelling of 20636373 in words is "twenty million, six hundred thirty-six thousand, three hundred seventy-three".