20922466 has 4 divisors (see below), whose sum is σ = 31383702. Its totient is φ = 10461232.

The previous prime is 20922463. The next prime is 20922487. The reversal of 20922466 is 66422902.

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., 20439441 + 483025 = 4521^2 + 695^2 .

It is a super-3 number, since 3×20922466³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20922463) 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 as a sum of consecutive naturals, namely, 5230615 + ... + 5230618.

Almost surely, 2^20922466 is an apocalyptic number.

20922466 is a deficient number, since it is larger than the sum of its proper divisors (10461236).

20922466 is a wasteful number, since it uses less digits than its factorization.

20922466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10461235.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20922466 is about 4574.1082190958. The cubic root of 20922466 is about 275.5524585466.

The spelling of 20922466 in words is "twenty million, nine hundred twenty-two thousand, four hundred sixty-six".