20868848 has 80 divisors (see below), whose sum is σ = 54329856. Its totient is φ = 7499520.

The previous prime is 20868847. The next prime is 20868853. The reversal of 20868848 is 84886802.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 20868799 and 20868808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20868847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15365 + ... + 16667.

Almost surely, 2^20868848 is an apocalyptic number.

20868848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20868848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27164928).

20868848 is an abundant number, since it is smaller than the sum of its proper divisors (33461008).

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

20868848 is a wasteful number, since it uses less digits than its factorization.

20868848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342 (or 1336 counting only the distinct ones).

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

The square root of 20868848 is about 4568.2434260884. The cubic root of 20868848 is about 275.3168711060.

It can be divided in two parts, 20 and 868848, that added together give a palindrome (868868).

The spelling of 20868848 in words is "twenty million, eight hundred sixty-eight thousand, eight hundred forty-eight".