20560782 has 32 divisors (see below), whose sum is σ = 45604224. Its totient is φ = 6127200.

The previous prime is 20560703. The next prime is 20560807. The reversal of 20560782 is 28706502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1473 + ... + 6579.

It is an arithmetic number, because the mean of its divisors is an integer number (1425132).

Almost surely, 2^20560782 is an apocalyptic number.

20560782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20560782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22802112).

20560782 is an abundant number, since it is smaller than the sum of its proper divisors (25043442).

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

20560782 is a wasteful number, since it uses less digits than its factorization.

20560782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5184.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20560782 is about 4534.3998500353. The cubic root of 20560782 is about 273.9554068122.

The spelling of 20560782 in words is "twenty million, five hundred sixty thousand, seven hundred eighty-two".