20445108 has 24 divisors (see below), whose sum is σ = 47826240. Its totient is φ = 6797760.

The previous prime is 20445097. The next prime is 20445109. The reversal of 20445108 is 80154402.

It is a super-2 number, since 2×20445108² = 836004882263328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445109) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3328 + ... + 7208.

It is an arithmetic number, because the mean of its divisors is an integer number (1992760).

Almost surely, 2^20445108 is an apocalyptic number.

It is an amenable number.

20445108 is an abundant number, since it is smaller than the sum of its proper divisors (27381132).

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

20445108 is a wasteful number, since it uses less digits than its factorization.

20445108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4327 (or 4325 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 20445108 is about 4521.6266984350. The cubic root of 20445108 is about 273.4406868940.

The spelling of 20445108 in words is "twenty million, four hundred forty-five thousand, one hundred eight".