20523373 has 8 divisors (see below), whose sum is σ = 22432928. Its totient is φ = 18661104.

The previous prime is 20523361. The next prime is 20523379. The reversal of 20523373 is 37332502.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20523373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20523379) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 10911 + ... + 12652.

It is an arithmetic number, because the mean of its divisors is an integer number (2804116).

Almost surely, 2^20523373 is an apocalyptic number.

It is an amenable number.

20523373 is a deficient number, since it is larger than the sum of its proper divisors (1909555).

20523373 is a wasteful number, since it uses less digits than its factorization.

20523373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23643.

The product of its (nonzero) digits is 3780, while the sum is 25.

The square root of 20523373 is about 4530.2729498343. The cubic root of 20523373 is about 273.7891579550.

Adding to 20523373 its reverse (37332502), we get a palindrome (57855875).

The spelling of 20523373 in words is "twenty million, five hundred twenty-three thousand, three hundred seventy-three".