220402466 has 8 divisors (see below), whose sum is σ = 330690924. Its totient is φ = 110172160.

The previous prime is 220402459. The next prime is 220402471. The reversal of 220402466 is 664204022.

It can be written as a sum of positive squares in 2 ways, for example, as 218892025 + 1510441 = 14795^2 + 1229^2 .

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335 + ... + 21258.

Almost surely, 2^220402466 is an apocalyptic number.

220402466 is a deficient number, since it is larger than the sum of its proper divisors (110288458).

220402466 is a wasteful number, since it uses less digits than its factorization.

220402466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29076.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 220402466 is about 14845.9579010585. The cubic root of 220402466 is about 604.0489723168.

Adding to 220402466 its reverse (664204022), we get a palindrome (884606488).

The spelling of 220402466 in words is "two hundred twenty million, four hundred two thousand, four hundred sixty-six".