20552782 has 8 divisors (see below), whose sum is σ = 30851856. Its totient is φ = 10268832.

The previous prime is 20552773. The next prime is 20552801. The reversal of 20552782 is 28725502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663 + ... + 6445.

It is an arithmetic number, because the mean of its divisors is an integer number (3856482).

Almost surely, 2^20552782 is an apocalyptic number.

20552782 is a deficient number, since it is larger than the sum of its proper divisors (10299074).

20552782 is a wasteful number, since it uses less digits than its factorization.

20552782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7562.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 20552782 is about 4533.5176188033. The cubic root of 20552782 is about 273.9198710762.

The spelling of 20552782 in words is "twenty million, five hundred fifty-two thousand, seven hundred eighty-two".