76728929 has 8 divisors (see below), whose sum is σ = 77273760. Its totient is φ = 76186656.

The previous prime is 76728907. The next prime is 76728931. The reversal of 76728929 is 92982767.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 76728929 - 2¹² = 76724833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76728959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167669 + ... + 168125.

It is an arithmetic number, because the mean of its divisors is an integer number (9659220).

Almost surely, 2^76728929 is an apocalyptic number.

It is an amenable number.

76728929 is a deficient number, since it is larger than the sum of its proper divisors (544831).

76728929 is a wasteful number, since it uses less digits than its factorization.

76728929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279.

The product of its digits is 762048, while the sum is 50.

The square root of 76728929 is about 8759.5050659270. The cubic root of 76728929 is about 424.9322687912.

The spelling of 76728929 in words is "seventy-six million, seven hundred twenty-eight thousand, nine hundred twenty-nine".