20162808 has 48 divisors (see below), whose sum is σ = 55189680. Its totient is φ = 6649344.

The previous prime is 20162797. The next prime is 20162827. The reversal of 20162808 is 80826102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5541 + ... + 8427.

It is an arithmetic number, because the mean of its divisors is an integer number (1149785).

Almost surely, 2^20162808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20162808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27594840).

20162808 is an abundant number, since it is smaller than the sum of its proper divisors (35026872).

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

20162808 is a wasteful number, since it uses less digits than its factorization.

20162808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996 (or 2989 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 20162808 is about 4490.3015488940. The cubic root of 20162808 is about 272.1763202226.

The spelling of 20162808 in words is "twenty million, one hundred sixty-two thousand, eight hundred eight".