20973108 has 24 divisors (see below), whose sum is σ = 52702048. Its totient is φ = 6453216.

The previous prime is 20973089. The next prime is 20973109. The reversal of 20973108 is 80137902.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20973109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67066 + ... + 67377.

Almost surely, 2^20973108 is an apocalyptic number.

It is an amenable number.

20973108 is an abundant number, since it is smaller than the sum of its proper divisors (31728940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20973108 is a wasteful number, since it uses less digits than its factorization.

20973108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134463 (or 134461 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 20973108 is about 4579.6405972521. The cubic root of 20973108 is about 275.7746006837.

The spelling of 20973108 in words is "twenty million, nine hundred seventy-three thousand, one hundred eight".