20606808 has 32 divisors (see below), whose sum is σ = 51629760. Its totient is φ = 6853920.

The previous prime is 20606801. The next prime is 20606813. The reversal of 20606808 is 80860602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20606801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18343 + ... + 19433.

It is an arithmetic number, because the mean of its divisors is an integer number (1613430).

Almost surely, 2^20606808 is an apocalyptic number.

It is an amenable number.

20606808 is an abundant number, since it is smaller than the sum of its proper divisors (31022952).

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

20606808 is a wasteful number, since it uses less digits than its factorization.

20606808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 20606808 is about 4539.4722160181. The cubic root of 20606808 is about 274.1596739234.

The spelling of 20606808 in words is "twenty million, six hundred six thousand, eight hundred eight".