220381912 has 32 divisors (see below), whose sum is σ = 437299200. Its totient is φ = 103831200.

The previous prime is 220381841. The next prime is 220381943. The reversal of 220381912 is 219183022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25237 + ... + 32827.

It is an arithmetic number, because the mean of its divisors is an integer number (13665600).

Almost surely, 2^220381912 is an apocalyptic number.

It is an amenable number.

220381912 is a deficient number, since it is larger than the sum of its proper divisors (216917288).

220381912 is a wasteful number, since it uses less digits than its factorization.

220381912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7807 (or 7803 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 220381912 is about 14845.2656426216. The cubic root of 220381912 is about 604.0301945346.

The spelling of 220381912 in words is "two hundred twenty million, three hundred eighty-one thousand, nine hundred twelve".