20572782 has 16 divisors (see below), whose sum is σ = 43311360. Its totient is φ = 6496632.

The previous prime is 20572781. The next prime is 20572789. The reversal of 20572782 is 28727502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20572781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90118 + ... + 90345.

It is an arithmetic number, because the mean of its divisors is an integer number (2706960).

Almost surely, 2^20572782 is an apocalyptic number.

20572782 is an abundant number, since it is smaller than the sum of its proper divisors (22738578).

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

20572782 is a wasteful number, since it uses less digits than its factorization.

20572782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180487.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 20572782 is about 4535.7228751325. The cubic root of 20572782 is about 274.0086931371.

The spelling of 20572782 in words is "twenty million, five hundred seventy-two thousand, seven hundred eighty-two".