76728451 has 2 divisors, whose sum is σ = 76728452. Its totient is φ = 76728450.

The previous prime is 76728427. The next prime is 76728499. The reversal of 76728451 is 15482767.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76728451 is a prime.

It is equal to p_4489555 and since 76728451 and 4489555 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (76728401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38364225 + 38364226.

It is an arithmetic number, because the mean of its divisors is an integer number (38364226).

Almost surely, 2^76728451 is an apocalyptic number.

76728451 is a deficient number, since it is larger than the sum of its proper divisors (1).

76728451 is an equidigital number, since it uses as much as digits as its factorization.

76728451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 76728451 is about 8759.4777812379. The cubic root of 76728451 is about 424.9313863859.

The spelling of 76728451 in words is "seventy-six million, seven hundred twenty-eight thousand, four hundred fifty-one".