210728112 has 80 divisors (see below), whose sum is σ = 628293120. Its totient is φ = 59613696.

The previous prime is 210728101. The next prime is 210728113. The reversal of 210728112 is 211827012.

210728112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (210728113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31564 + ... + 37652.

It is an arithmetic number, because the mean of its divisors is an integer number (7853664).

Almost surely, 2^210728112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210728112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314146560).

210728112 is an abundant number, since it is smaller than the sum of its proper divisors (417565008).

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

210728112 is a wasteful number, since it uses less digits than its factorization.

210728112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210 (or 6204 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 210728112 is about 14516.4772586189. The cubic root of 210728112 is about 595.0783617340.

The spelling of 210728112 in words is "two hundred ten million, seven hundred twenty-eight thousand, one hundred twelve".