2116728 has 24 divisors (see below), whose sum is σ = 5733000. Its totient is φ = 705552.

The previous prime is 2116717. The next prime is 2116729. The reversal of 2116728 is 8276112.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14628 + ... + 14771.

It is an arithmetic number, because the mean of its divisors is an integer number (238875).

2^2116728 is an apocalyptic number.

It is an amenable number.

2116728 is an abundant number, since it is smaller than the sum of its proper divisors (3616272).

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

2116728 is a wasteful number, since it uses less digits than its factorization.

2116728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29411 (or 29404 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 2116728 is about 1454.8979345645. The cubic root of 2116728 is about 128.3970418860.

The spelling of 2116728 in words is "two million, one hundred sixteen thousand, seven hundred twenty-eight".