7728788362 has 4 divisors (see below), whose sum is σ = 11593182546. Its totient is φ = 3864394180.

The previous prime is 7728788359. The next prime is 7728788381. The reversal of 7728788362 is 2638878277.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2638878277 = 7 ⋅376982611.

It can be written as a sum of positive squares in only one way, i.e., 7057512081 + 671276281 = 84009^2 + 25909^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7728788297 and 7728788306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932197089 + ... + 1932197092.

Almost surely, 2^7728788362 is an apocalyptic number.

7728788362 is a deficient number, since it is larger than the sum of its proper divisors (3864394184).

7728788362 is a wasteful number, since it uses less digits than its factorization.

7728788362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864394183.

The product of its digits is 12644352, while the sum is 58.

The square root of 7728788362 is about 87913.5277531280. The cubic root of 7728788362 is about 1977.1387064791.

It can be divided in two parts, 77287 and 88362, that added together give a square (165649 = 407²).

The spelling of 7728788362 in words is "seven billion, seven hundred twenty-eight million, seven hundred eighty-eight thousand, three hundred sixty-two".