20225808 has 40 divisors (see below), whose sum is σ = 58056800. Its totient is φ = 6741792.

The previous prime is 20225783. The next prime is 20225813. The reversal of 20225808 is 80852202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22978 + ... + 23841.

It is an arithmetic number, because the mean of its divisors is an integer number (1451420).

Almost surely, 2^20225808 is an apocalyptic number.

It is an amenable number.

20225808 is an abundant number, since it is smaller than the sum of its proper divisors (37830992).

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

20225808 is a wasteful number, since it uses less digits than its factorization.

20225808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46836 (or 46824 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 20225808 is about 4497.3111967041. The cubic root of 20225808 is about 272.4595030019.

The spelling of 20225808 in words is "twenty million, two hundred twenty-five thousand, eight hundred eight".