20798827 has 4 divisors (see below), whose sum is σ = 23770096. Its totient is φ = 17827560.

The previous prime is 20798797. The next prime is 20798839. The reversal of 20798827 is 72889702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20798827 - 2¹¹ = 20796779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20798867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1485624 + ... + 1485637.

It is an arithmetic number, because the mean of its divisors is an integer number (5942524).

Almost surely, 2^20798827 is an apocalyptic number.

20798827 is a deficient number, since it is larger than the sum of its proper divisors (2971269).

20798827 is an equidigital number, since it uses as much as digits as its factorization.

20798827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971268.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 20798827 is about 4560.5730999514. The cubic root of 20798827 is about 275.0086035876.

The spelling of 20798827 in words is "twenty million, seven hundred ninety-eight thousand, eight hundred twenty-seven".