76728799 has 8 divisors (see below), whose sum is σ = 88058880. Its totient is φ = 65490936.

The previous prime is 76728793. The next prime is 76728811. The reversal of 76728799 is 99782767.

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

It is not a de Polignac number, because 76728799 - 2¹¹ = 76726751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76728793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21259 + ... + 24604.

It is an arithmetic number, because the mean of its divisors is an integer number (11007360).

Almost surely, 2^76728799 is an apocalyptic number.

76728799 is a deficient number, since it is larger than the sum of its proper divisors (11330081).

76728799 is a wasteful number, since it uses less digits than its factorization.

76728799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46109.

The product of its digits is 2667168, while the sum is 55.

The square root of 76728799 is about 8759.4976454132. The cubic root of 76728799 is about 424.9320288068.

It can be divided in two parts, 7672 and 8799, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 76728799 in words is "seventy-six million, seven hundred twenty-eight thousand, seven hundred ninety-nine".