76724330 has 16 divisors (see below), whose sum is σ = 138986280. Its totient is φ = 30493632.

The previous prime is 76724327. The next prime is 76724339. The reversal of 76724330 is 3342767.

It can be written as a sum of positive squares in 4 ways, for example, as 43811161 + 32913169 = 6619^2 + 5737^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76724339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22865 + ... + 26004.

Almost surely, 2^76724330 is an apocalyptic number.

76724330 is a deficient number, since it is larger than the sum of its proper divisors (62261950).

76724330 is a wasteful number, since it uses less digits than its factorization.

76724330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49033.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 76724330 is about 8759.2425471613. The cubic root of 76724330 is about 424.9237787185.

The spelling of 76724330 in words is "seventy-six million, seven hundred twenty-four thousand, three hundred thirty".