80727272 has 16 divisors (see below), whose sum is σ = 153065700. Its totient is φ = 39909760.

The previous prime is 80727239. The next prime is 80727287. The reversal of 80727272 is 27272708.

It can be written as a sum of positive squares in 2 ways, for example, as 79459396 + 1267876 = 8914^2 + 1126^2 .

80727272 is a modest number, since divided by 727272 gives 80 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55979 + ... + 57402.

Almost surely, 2^80727272 is an apocalyptic number.

It is an amenable number.

80727272 is a deficient number, since it is larger than the sum of its proper divisors (72338428).

80727272 is a wasteful number, since it uses less digits than its factorization.

80727272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113476 (or 113472 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 80727272 is about 8984.8356690593. The cubic root of 80727272 is about 432.1887178444.

The spelling of 80727272 in words is "eighty million, seven hundred twenty-seven thousand, two hundred seventy-two".