20808652 has 24 divisors (see below), whose sum is σ = 39031776. Its totient is φ = 9681408.

The previous prime is 20808637. The next prime is 20808677. The reversal of 20808652 is 25680802.

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 7 ways as a sum of consecutive naturals, for example, 348 + ... + 6460.

It is an arithmetic number, because the mean of its divisors is an integer number (1626324).

Almost surely, 2^20808652 is an apocalyptic number.

It is an amenable number.

20808652 is a deficient number, since it is larger than the sum of its proper divisors (18223124).

20808652 is a wasteful number, since it uses less digits than its factorization.

20808652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6177 (or 6175 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 20808652 is about 4561.6501400261. The cubic root of 20808652 is about 275.0518998464.

The spelling of 20808652 in words is "twenty million, eight hundred eight thousand, six hundred fifty-two".