20888446 has 8 divisors (see below), whose sum is σ = 31455360. Its totient is φ = 10403328.

The previous prime is 20888431. The next prime is 20888449. The reversal of 20888446 is 64488802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20888399 and 20888408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20888449) 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, 19806 + ... + 20833.

It is an arithmetic number, because the mean of its divisors is an integer number (3931920).

Almost surely, 2^20888446 is an apocalyptic number.

20888446 is a deficient number, since it is larger than the sum of its proper divisors (10566914).

20888446 is a wasteful number, since it uses less digits than its factorization.

20888446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40898.

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 20888446 is about 4570.3879485225. The cubic root of 20888446 is about 275.4030277846.

The spelling of 20888446 in words is "twenty million, eight hundred eighty-eight thousand, four hundred forty-six".