7728488 has 16 divisors (see below), whose sum is σ = 14523360. Its totient is φ = 3855600.

The previous prime is 7728463. The next prime is 7728527. The reversal of 7728488 is 8848277.

It is a happy number.

It is a super-2 number, since 2×7728488² = 119459053532288, which contains 22 as substring.

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, 4283 + ... + 5813.

It is an arithmetic number, because the mean of its divisors is an integer number (907710).

Almost surely, 2^7728488 is an apocalyptic number.

It is an amenable number.

7728488 is a deficient number, since it is larger than the sum of its proper divisors (6794872).

7728488 is a wasteful number, since it uses less digits than its factorization.

7728488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168 (or 2164 counting only the distinct ones).

The product of its digits is 200704, while the sum is 44.

The square root of 7728488 is about 2780.0158272931. The cubic root of 7728488 is about 197.7113093796.

The spelling of 7728488 in words is "seven million, seven hundred twenty-eight thousand, four hundred eighty-eight".