220312004 has 24 divisors (see below), whose sum is σ = 421327200. Its totient is φ = 99967680.

The previous prime is 220312003. The next prime is 220312019. The reversal of 220312004 is 400213022.

It is a self number, because there is not a number n which added to its sum of digits gives 220312004.

It is not an unprimeable number, because it can be changed into a prime (220312003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23192 + ... + 31280.

It is an arithmetic number, because the mean of its divisors is an integer number (17555300).

Almost surely, 2^220312004 is an apocalyptic number.

It is an amenable number.

220312004 is a deficient number, since it is larger than the sum of its proper divisors (201015196).

220312004 is a wasteful number, since it uses less digits than its factorization.

220312004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8723 (or 8721 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 220312004 is about 14842.9109004939. The cubic root of 220312004 is about 603.9663190435.

Adding to 220312004 its reverse (400213022), we get a palindrome (620525026).

The spelling of 220312004 in words is "two hundred twenty million, three hundred twelve thousand, four".