220401004 has 12 divisors (see below), whose sum is σ = 385809984. Its totient is φ = 110169584.

The previous prime is 220400981. The next prime is 220401011. The reversal of 220401004 is 400104022.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17349 + ... + 27235.

It is an arithmetic number, because the mean of its divisors is an integer number (32150832).

Almost surely, 2^220401004 is an apocalyptic number.

It is an amenable number.

220401004 is a deficient number, since it is larger than the sum of its proper divisors (165408980).

220401004 is a wasteful number, since it uses less digits than its factorization.

220401004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15464 (or 15462 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 220401004 is about 14845.9086619850. The cubic root of 220401004 is about 604.0476366972.

Adding to 220401004 its reverse (400104022), we get a palindrome (620505026).

The spelling of 220401004 in words is "two hundred twenty million, four hundred one thousand, four".