20889027 has 6 divisors (see below), whose sum is σ = 30173052. Its totient is φ = 13926012.

The previous prime is 20888983. The next prime is 20889031. The reversal of 20889027 is 72098802.

It is not a de Polignac number, because 20889027 - 2⁶ = 20888963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20888982 and 20889000.

It is not an unprimeable number, because it can be changed into a prime (20881027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1160493 + ... + 1160510.

It is an arithmetic number, because the mean of its divisors is an integer number (5028842).

Almost surely, 2^20889027 is an apocalyptic number.

20889027 is a deficient number, since it is larger than the sum of its proper divisors (9284025).

20889027 is a wasteful number, since it uses less digits than its factorization.

20889027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321009 (or 2321006 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 20889027 is about 4570.4515094244. The cubic root of 20889027 is about 275.4055811527.

The spelling of 20889027 in words is "twenty million, eight hundred eighty-nine thousand, twenty-seven".