20446466 has 8 divisors (see below), whose sum is σ = 30757644. Its totient is φ = 10193920.

The previous prime is 20446463. The next prime is 20446477. The reversal of 20446466 is 66464402.

It can be written as a sum of positive squares in 2 ways, for example, as 19404025 + 1042441 = 4405^2 + 1021^2 .

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 (20446463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13775 + ... + 15186.

Almost surely, 2^20446466 is an apocalyptic number.

20446466 is a deficient number, since it is larger than the sum of its proper divisors (10311178).

20446466 is a wasteful number, since it uses less digits than its factorization.

20446466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29316.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 20446466 is about 4521.7768631369. The cubic root of 20446466 is about 273.4467408969.

The spelling of 20446466 in words is "twenty million, four hundred forty-six thousand, four hundred sixty-six".