76722530 has 16 divisors (see below), whose sum is σ = 146224440. Its totient is φ = 28883712.

The previous prime is 76722523. The next prime is 76722563. The reversal of 76722530 is 3522767.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56265001 + 20457529 = 7501^2 + 4523^2 .

It is an unprimeable number.

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, 225485 + ... + 225824.

Almost surely, 2^76722530 is an apocalyptic number.

76722530 is a deficient number, since it is larger than the sum of its proper divisors (69501910).

76722530 is a wasteful number, since it uses less digits than its factorization.

76722530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451333.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 76722530 is about 8759.1397979482. The cubic root of 76722530 is about 424.9204557014.

The spelling of 76722530 in words is "seventy-six million, seven hundred twenty-two thousand, five hundred thirty".