20552008 has 32 divisors (see below), whose sum is σ = 40320000. Its totient is φ = 9809280.

The previous prime is 20551987. The next prime is 20552009. The reversal of 20552008 is 80025502.

It is a self number, because there is not a number n which added to its sum of digits gives 20552008.

It is not an unprimeable number, because it can be changed into a prime (20552009) 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 7 ways as a sum of consecutive naturals, for example, 19068 + ... + 20116.

It is an arithmetic number, because the mean of its divisors is an integer number (1260000).

Almost surely, 2^20552008 is an apocalyptic number.

It is an amenable number.

20552008 is a deficient number, since it is larger than the sum of its proper divisors (19767992).

20552008 is a wasteful number, since it uses less digits than its factorization.

20552008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 20552008 is about 4533.4322538227. The cubic root of 20552008 is about 273.9164325045.

The spelling of 20552008 in words is "twenty million, five hundred fifty-two thousand, eight".