20443466 has 8 divisors (see below), whose sum is σ = 30700740. Its totient is φ = 10209888.

The previous prime is 20443459. The next prime is 20443523. The reversal of 20443466 is 66434402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17098225 + 3345241 = 4135^2 + 1829^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3581 + ... + 7328.

Almost surely, 2^20443466 is an apocalyptic number.

20443466 is a deficient number, since it is larger than the sum of its proper divisors (10257274).

20443466 is a wasteful number, since it uses less digits than its factorization.

20443466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11848.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 20443466 is about 4521.4451229668. The cubic root of 20443466 is about 273.4333664529.

Adding to 20443466 its reverse (66434402), we get a palindrome (86877868).

The spelling of 20443466 in words is "twenty million, four hundred forty-three thousand, four hundred sixty-six".