20885376 has 64 divisors (see below), whose sum is σ = 56022480. Its totient is φ = 6893568.

The previous prime is 20885341. The next prime is 20885383. The reversal of 20885376 is 67358802.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×20885376² = 872397861322752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52410 + ... + 52806.

Almost surely, 2^20885376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20885376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28011240).

20885376 is an abundant number, since it is smaller than the sum of its proper divisors (35137104).

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

20885376 is a wasteful number, since it uses less digits than its factorization.

20885376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 20885376 is about 4570.0520784779. The cubic root of 20885376 is about 275.3895350190.

The spelling of 20885376 in words is "twenty million, eight hundred eighty-five thousand, three hundred seventy-six".