20888468 has 12 divisors (see below), whose sum is σ = 37815540. Its totient is φ = 10084032.

The previous prime is 20888449. The next prime is 20888473. The reversal of 20888468 is 86488802.

It can be written as a sum of positive squares in 2 ways, for example, as 6615184 + 14273284 = 2572^2 + 3778^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89921 + ... + 90152.

It is an arithmetic number, because the mean of its divisors is an integer number (3151295).

Almost surely, 2^20888468 is an apocalyptic number.

It is an amenable number.

20888468 is a deficient number, since it is larger than the sum of its proper divisors (16927072).

20888468 is a wasteful number, since it uses less digits than its factorization.

20888468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180106 (or 180104 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 44.

The square root of 20888468 is about 4570.3903553198. The cubic root of 20888468 is about 275.4031244707.

The spelling of 20888468 in words is "twenty million, eight hundred eighty-eight thousand, four hundred sixty-eight".