20782960 has 120 divisors (see below), whose sum is σ = 56402640. Its totient is φ = 7096320.

The previous prime is 20782939. The next prime is 20782969. The reversal of 20782960 is 6928702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20782969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183864 + ... + 183976.

It is an arithmetic number, because the mean of its divisors is an integer number (470022).

Almost surely, 2^20782960 is an apocalyptic number.

20782960 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 20782960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28201320).

20782960 is an abundant number, since it is smaller than the sum of its proper divisors (35619680).

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

20782960 is a wasteful number, since it uses less digits than its factorization.

20782960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20782960 is about 4558.8331840505. The cubic root of 20782960 is about 274.9386529824.

The spelling of 20782960 in words is "twenty million, seven hundred eighty-two thousand, nine hundred sixty".