20646282 has 8 divisors (see below), whose sum is σ = 41292576. Its totient is φ = 6882092.

The previous prime is 20646281. The next prime is 20646299. The reversal of 20646282 is 28264602.

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

20646282 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20646281) 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, 1720518 + ... + 1720529.

It is an arithmetic number, because the mean of its divisors is an integer number (5161572).

Almost surely, 2^20646282 is an apocalyptic number.

20646282 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20646282 is a wasteful number, since it uses less digits than its factorization.

20646282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441052.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 20646282 is about 4543.8179981157. The cubic root of 20646282 is about 274.3346205731.

The spelling of 20646282 in words is "twenty million, six hundred forty-six thousand, two hundred eighty-two".