7728066 has 24 divisors (see below), whose sum is σ = 16982784. Its totient is φ = 2539320.

The previous prime is 7728053. The next prime is 7728067. The reversal of 7728066 is 6608277.

It is a self number, because there is not a number n which added to its sum of digits gives 7728066.

It is not an unprimeable number, because it can be changed into a prime (7728067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1746 + ... + 4301.

It is an arithmetic number, because the mean of its divisors is an integer number (707616).

Almost surely, 2^7728066 is an apocalyptic number.

7728066 is an abundant number, since it is smaller than the sum of its proper divisors (9254718).

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

7728066 is a wasteful number, since it uses less digits than its factorization.

7728066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126 (or 6123 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 7728066 is about 2779.9399274085. The cubic root of 7728066 is about 197.7077107588.

The spelling of 7728066 in words is "seven million, seven hundred twenty-eight thousand, sixty-six".