76816072 has 8 divisors (see below), whose sum is σ = 144030150. Its totient is φ = 38408032.

The previous prime is 76816063. The next prime is 76816073. The reversal of 76816072 is 27061867.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66357316 + 10458756 = 8146^2 + 3234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (76816073) 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 as a sum of consecutive naturals, namely, 4800997 + ... + 4801012.

Almost surely, 2^76816072 is an apocalyptic number.

It is an amenable number.

76816072 is a deficient number, since it is larger than the sum of its proper divisors (67214078).

76816072 is a wasteful number, since it uses less digits than its factorization.

76816072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9602015 (or 9602011 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 76816072 is about 8764.4778509618. The cubic root of 76816072 is about 425.0930767308.

The spelling of 76816072 in words is "seventy-six million, eight hundred sixteen thousand, seventy-two".