20682722 has 4 divisors (see below), whose sum is σ = 31024086. Its totient is φ = 10341360.

The previous prime is 20682719. The next prime is 20682743. The reversal of 20682722 is 22728602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13169641 + 7513081 = 3629^2 + 2741^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170679 + ... + 5170682.

Almost surely, 2^20682722 is an apocalyptic number.

20682722 is a deficient number, since it is larger than the sum of its proper divisors (10341364).

20682722 is a wasteful number, since it uses less digits than its factorization.

20682722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10341363.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 20682722 is about 4547.8260740710. The cubic root of 20682722 is about 274.4959228683.

It can be divided in two parts, 206 and 82722, that added together give a palindrome (82928).

The spelling of 20682722 in words is "twenty million, six hundred eighty-two thousand, seven hundred twenty-two".