219449028 has 24 divisors (see below), whose sum is σ = 513604000. Its totient is φ = 72927360.

The previous prime is 219448997. The next prime is 219449029. The reversal of 219449028 is 820944912.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (219449029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23653 + ... + 31596.

Almost surely, 2^219449028 is an apocalyptic number.

It is an amenable number.

219449028 is an abundant number, since it is smaller than the sum of its proper divisors (294154972).

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

219449028 is a wasteful number, since it uses less digits than its factorization.

219449028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55587 (or 55585 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 219449028 is about 14813.8120684718. The cubic root of 219449028 is about 603.1766957684.

The spelling of 219449028 in words is "two hundred nineteen million, four hundred forty-nine thousand, twenty-eight".