220420434 has 32 divisors (see below), whose sum is σ = 481267584. Its totient is φ = 66890880.

The previous prime is 220420411. The next prime is 220420439. The reversal of 220420434 is 434024022.

It is a self number, because there is not a number n which added to its sum of digits gives 220420434.

It is not an unprimeable number, because it can be changed into a prime (220420439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13662 + ... + 25049.

It is an arithmetic number, because the mean of its divisors is an integer number (15039612).

Almost surely, 2^220420434 is an apocalyptic number.

220420434 is an abundant number, since it is smaller than the sum of its proper divisors (260847150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220420434 is a wasteful number, since it uses less digits than its factorization.

220420434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38802.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 220420434 is about 14846.5630366088. The cubic root of 220420434 is about 604.0653866174.

Adding to 220420434 its reverse (434024022), we get a palindrome (654444456).

The spelling of 220420434 in words is "two hundred twenty million, four hundred twenty thousand, four hundred thirty-four".