219728936 has 48 divisors (see below), whose sum is σ = 500113440. Its totient is φ = 90071520.

The previous prime is 219728933. The next prime is 219728947. The reversal of 219728936 is 639827912.

It is a happy number.

219728936 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (219728933) 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 11 ways as a sum of consecutive naturals, for example, 3170 + ... + 21201.

It is an arithmetic number, because the mean of its divisors is an integer number (10419030).

Almost surely, 2^219728936 is an apocalyptic number.

It is an amenable number.

219728936 is an abundant number, since it is smaller than the sum of its proper divisors (280384504).

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

219728936 is a wasteful number, since it uses less digits than its factorization.

219728936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24414 (or 24403 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 219728936 is about 14823.2565922607. The cubic root of 219728936 is about 603.4330381366.

The spelling of 219728936 in words is "two hundred nineteen million, seven hundred twenty-eight thousand, nine hundred thirty-six".