220423402 has 8 divisors (see below), whose sum is σ = 330833700. Its totient is φ = 110145504.

The previous prime is 220423387. The next prime is 220423451. The reversal of 220423402 is 204324022.

220423402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 217828081 + 2595321 = 14759^2 + 1611^2 .

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

It is a super-2 number, since 2×220423402² = 97172952298507208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220423402.

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, 28827 + ... + 35662.

Almost surely, 2^220423402 is an apocalyptic number.

220423402 is a deficient number, since it is larger than the sum of its proper divisors (110410298).

220423402 is a wasteful number, since it uses less digits than its factorization.

220423402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66200.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 220423402 is about 14846.6629920666. The cubic root of 220423402 is about 604.0680978876.

Adding to 220423402 its reverse (204324022), we get a palindrome (424747424).

The spelling of 220423402 in words is "two hundred twenty million, four hundred twenty-three thousand, four hundred two".