20108372 has 12 divisors (see below), whose sum is σ = 35304276. Its totient is φ = 10021440.

The previous prime is 20108357. The next prime is 20108377. The reversal of 20108372 is 27380102.

It can be written as a sum of positive squares in 2 ways, for example, as 163216 + 19945156 = 404^2 + 4466^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20108377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6779 + ... + 9282.

It is an arithmetic number, because the mean of its divisors is an integer number (2942023).

Almost surely, 2^20108372 is an apocalyptic number.

It is an amenable number.

20108372 is a deficient number, since it is larger than the sum of its proper divisors (15195904).

20108372 is a wasteful number, since it uses less digits than its factorization.

20108372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16378 (or 16376 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20108372 is about 4484.2359438370. The cubic root of 20108372 is about 271.9311568853.

Adding to 20108372 its reverse (27380102), we get a palindrome (47488474).

The spelling of 20108372 in words is "twenty million, one hundred eight thousand, three hundred seventy-two".