76312730 has 16 divisors (see below), whose sum is σ = 147929544. Its totient is φ = 28176960.

The previous prime is 76312697. The next prime is 76312751. The reversal of 76312730 is 3721367.

It can be written as a sum of positive squares in 4 ways, for example, as 25090081 + 51222649 = 5009^2 + 7157^2 .

It is a super-3 number, since 3×76312730³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76312693 and 76312702.

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, 293381 + ... + 293640.

Almost surely, 2^76312730 is an apocalyptic number.

76312730 is a deficient number, since it is larger than the sum of its proper divisors (71616814).

76312730 is a wasteful number, since it uses less digits than its factorization.

76312730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587041.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 76312730 is about 8735.7157691857. The cubic root of 76312730 is about 424.1625585594.

The spelling of 76312730 in words is "seventy-six million, three hundred twelve thousand, seven hundred thirty".