20889552 has 40 divisors (see below), whose sum is σ = 54130464. Its totient is φ = 6941824.

The previous prime is 20889551. The next prime is 20889553. The reversal of 20889552 is 25598802.

It is an interprime number because it is at equal distance from previous prime (20889551) and next prime (20889553).

It is a self number, because there is not a number n which added to its sum of digits gives 20889552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20889551) 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, 26638 + ... + 27410.

Almost surely, 2^20889552 is an apocalyptic number.

It is an amenable number.

20889552 is an abundant number, since it is smaller than the sum of its proper divisors (33240912).

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

20889552 is a wasteful number, since it uses less digits than its factorization.

20889552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1341 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 20889552 is about 4570.5089432141. The cubic root of 20889552 is about 275.4078883723.

The spelling of 20889552 in words is "twenty million, eight hundred eighty-nine thousand, five hundred fifty-two".