219738128 has 10 divisors (see below), whose sum is σ = 425742654. Its totient is φ = 109869056.

The previous prime is 219738121. The next prime is 219738149. The reversal of 219738128 is 821837912.

219738128 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 197346304 + 22391824 = 14048^2 + 4732^2 .

It is not an unprimeable number, because it can be changed into a prime (219738121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6866801 + ... + 6866832.

Almost surely, 2^219738128 is an apocalyptic number.

It is an amenable number.

219738128 is a deficient number, since it is larger than the sum of its proper divisors (206004526).

219738128 is a wasteful number, since it uses less digits than its factorization.

219738128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13733641 (or 13733635 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 219738128 is about 14823.5666423435. The cubic root of 219738128 is about 603.4414525634.

The spelling of 219738128 in words is "two hundred nineteen million, seven hundred thirty-eight thousand, one hundred twenty-eight".