220423134 has 64 divisors (see below), whose sum is σ = 472594752. Its totient is φ = 68428800.

The previous prime is 220423127. The next prime is 220423187. The reversal of 220423134 is 431324022.

It is a self number, because there is not a number n which added to its sum of digits gives 220423134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555024 + ... + 555420.

It is an arithmetic number, because the mean of its divisors is an integer number (7384293).

Almost surely, 2^220423134 is an apocalyptic number.

220423134 is an abundant number, since it is smaller than the sum of its proper divisors (252171618).

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

220423134 is a wasteful number, since it uses less digits than its factorization.

220423134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 220423134 is about 14846.6539664667. The cubic root of 220423134 is about 604.0678530704.

Adding to 220423134 its reverse (431324022), we get a palindrome (651747156).

The spelling of 220423134 in words is "two hundred twenty million, four hundred twenty-three thousand, one hundred thirty-four".