20848680 has 96 divisors (see below), whose sum is σ = 70129800. Its totient is φ = 5365248.

The previous prime is 20848657. The next prime is 20848693. The reversal of 20848680 is 8684802.

It can be written as a sum of positive squares in 4 ways, for example, as 10850436 + 9998244 = 3294^2 + 3162^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9442 + ... + 11438.

Almost surely, 2^20848680 is an apocalyptic number.

20848680 is a gapful number since it is divisible by the number (20) 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 20848680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35064900).

20848680 is an abundant number, since it is smaller than the sum of its proper divisors (49281120).

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

20848680 is a wasteful number, since it uses less digits than its factorization.

20848680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043 (or 2036 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 20848680 is about 4566.0354794942. The cubic root of 20848680 is about 275.2281522602.

It can be divided in two parts, 20848 and 680, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 20848680 in words is "twenty million, eight hundred forty-eight thousand, six hundred eighty".