20422706 has 4 divisors (see below), whose sum is σ = 30634062. Its totient is φ = 10211352.

The previous prime is 20422697. The next prime is 20422723. The reversal of 20422706 is 60722402.

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., 12666481 + 7756225 = 3559^2 + 2785^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5105675 + ... + 5105678.

Almost surely, 2^20422706 is an apocalyptic number.

20422706 is a deficient number, since it is larger than the sum of its proper divisors (10211356).

20422706 is a wasteful number, since it uses less digits than its factorization.

20422706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10211355.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 20422706 is about 4519.1488136595. The cubic root of 20422706 is about 273.3407794257.

The spelling of 20422706 in words is "twenty million, four hundred twenty-two thousand, seven hundred six".