7728625994 has 8 divisors (see below), whose sum is σ = 11600739648. Its totient is φ = 3861712780.

The previous prime is 7728625981. The next prime is 7728626053. The reversal of 7728625994 is 4995268277.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296392 + ... + 1302339.

It is an arithmetic number, because the mean of its divisors is an integer number (1450092456).

Almost surely, 2^7728625994 is an apocalyptic number.

7728625994 is a deficient number, since it is larger than the sum of its proper divisors (3872113654).

7728625994 is a wasteful number, since it uses less digits than its factorization.

7728625994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600220.

The product of its digits is 15240960, while the sum is 59.

The square root of 7728625994 is about 87912.6042954024. The cubic root of 7728625994 is about 1977.1248610012.

The spelling of 7728625994 in words is "seven billion, seven hundred twenty-eight million, six hundred twenty-five thousand, nine hundred ninety-four".