20657282 has 8 divisors (see below), whose sum is σ = 31022400. Its totient is φ = 10316484.

The previous prime is 20657281. The next prime is 20657293. The reversal of 20657282 is 28275602.

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

It is not an unprimeable number, because it can be changed into a prime (20657281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3782 + ... + 7457.

It is an arithmetic number, because the mean of its divisors is an integer number (3877800).

Almost surely, 2^20657282 is an apocalyptic number.

20657282 is a deficient number, since it is larger than the sum of its proper divisors (10365118).

20657282 is a wasteful number, since it uses less digits than its factorization.

20657282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12160.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 20657282 is about 4545.0282727393. The cubic root of 20657282 is about 274.3833322501.

The spelling of 20657282 in words is "twenty million, six hundred fifty-seven thousand, two hundred eighty-two".