20889075 has 48 divisors (see below), whose sum is σ = 36961920. Its totient is φ = 10379520.

The previous prime is 20889061. The next prime is 20889109. The reversal of 20889075 is 57098802.

It is not a de Polignac number, because 20889075 - 2¹³ = 20880883 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 152407 + ... + 152543.

It is an arithmetic number, because the mean of its divisors is an integer number (770040).

Almost surely, 2^20889075 is an apocalyptic number.

20889075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20889075 is a deficient number, since it is larger than the sum of its proper divisors (16072845).

20889075 is a wasteful number, since it uses less digits than its factorization.

20889075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 20889075 is about 4570.4567605437. The cubic root of 20889075 is about 275.4057921001.

The spelling of 20889075 in words is "twenty million, eight hundred eighty-nine thousand, seventy-five".