7728112 has 20 divisors (see below), whose sum is σ = 17112496. Its totient is φ = 3312000.

The previous prime is 7728109. The next prime is 7728121. The reversal of 7728112 is 2118277.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34389 + ... + 34612.

Almost surely, 2^7728112 is an apocalyptic number.

It is an amenable number.

7728112 is an abundant number, since it is smaller than the sum of its proper divisors (9384384).

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

7728112 is a wasteful number, since it uses less digits than its factorization.

7728112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69016 (or 69010 counting only the distinct ones).

The product of its digits is 1568, while the sum is 28.

The square root of 7728112 is about 2779.9482009563. The cubic root of 7728112 is about 197.7081030319.

The spelling of 7728112 in words is "seven million, seven hundred twenty-eight thousand, one hundred twelve".