76904720 has 40 divisors (see below), whose sum is σ = 179285400. Its totient is φ = 30679040.

The previous prime is 76904717. The next prime is 76904741. The reversal of 76904720 is 2740967.

It can be written as a sum of positive squares in 4 ways, for example, as 29073664 + 47831056 = 5392^2 + 6916^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 34850 + ... + 36990.

It is an arithmetic number, because the mean of its divisors is an integer number (4482135).

Almost surely, 2^76904720 is an apocalyptic number.

It is an amenable number.

76904720 is an abundant number, since it is smaller than the sum of its proper divisors (102380680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76904720 is a wasteful number, since it uses less digits than its factorization.

76904720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603 (or 2597 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 76904720 is about 8769.5336249997. The cubic root of 76904720 is about 425.2565371602.

The spelling of 76904720 in words is "seventy-six million, nine hundred four thousand, seven hundred twenty".