76728741 has 4 divisors (see below), whose sum is σ = 102304992. Its totient is φ = 51152492.

The previous prime is 76728739. The next prime is 76728749. The reversal of 76728741 is 14782767.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76728741 - 2¹ = 76728739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76728693 and 76728702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76728749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12788121 + ... + 12788126.

It is an arithmetic number, because the mean of its divisors is an integer number (25576248).

Almost surely, 2^76728741 is an apocalyptic number.

It is an amenable number.

76728741 is a deficient number, since it is larger than the sum of its proper divisors (25576251).

76728741 is a wasteful number, since it uses less digits than its factorization.

76728741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25576250.

The product of its digits is 131712, while the sum is 42.

The square root of 76728741 is about 8759.4943347205. The cubic root of 76728741 is about 424.9319217368.

The spelling of 76728741 in words is "seventy-six million, seven hundred twenty-eight thousand, seven hundred forty-one".