20578108 has 12 divisors (see below), whose sum is σ = 36046360. Its totient is φ = 10279152.

The previous prime is 20578097. The next prime is 20578127. The reversal of 20578108 is 80187502.

It is a self number, because there is not a number n which added to its sum of digits gives 20578108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198 + ... + 7666.

Almost surely, 2^20578108 is an apocalyptic number.

It is an amenable number.

20578108 is a deficient number, since it is larger than the sum of its proper divisors (15468252).

20578108 is a wasteful number, since it uses less digits than its factorization.

20578108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4956 (or 4954 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 20578108 is about 4536.3099541367. The cubic root of 20578108 is about 274.0323367451.

The spelling of 20578108 in words is "twenty million, five hundred seventy-eight thousand, one hundred eight".