20308116 has 48 divisors (see below), whose sum is σ = 49641984. Its totient is φ = 6454656.

The previous prime is 20308111. The next prime is 20308121. The reversal of 20308116 is 61180302.

It is an interprime number because it is at equal distance from previous prime (20308111) and next prime (20308121).

It is a junction number, because it is equal to n+sod(n) for n = 20308092 and 20308101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20308111) 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 15 ways as a sum of consecutive naturals, for example, 23101 + ... + 23963.

It is an arithmetic number, because the mean of its divisors is an integer number (1034208).

Almost surely, 2^20308116 is an apocalyptic number.

It is an amenable number.

20308116 is an abundant number, since it is smaller than the sum of its proper divisors (29333868).

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

20308116 is a wasteful number, since it uses less digits than its factorization.

20308116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20308116 is about 4506.4527069526. The cubic root of 20308116 is about 272.8285899523.

Adding to 20308116 its reverse (61180302), we get a palindrome (81488418).

The spelling of 20308116 in words is "twenty million, three hundred eight thousand, one hundred sixteen".