20808270 has 48 divisors (see below), whose sum is σ = 61832160. Its totient is φ = 4756032.

The previous prime is 20808251. The next prime is 20808301. The reversal of 20808270 is 7280802.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15885 + ... + 17144.

It is an arithmetic number, because the mean of its divisors is an integer number (1288170).

Almost surely, 2^20808270 is an apocalyptic number.

20808270 is an abundant number, since it is smaller than the sum of its proper divisors (41023890).

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

20808270 is a wasteful number, since it uses less digits than its factorization.

20808270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33049 (or 33046 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 20808270 is about 4561.6082690209. The cubic root of 20808270 is about 275.0502167249.

The spelling of 20808270 in words is "twenty million, eight hundred eight thousand, two hundred seventy".