80609728 has 14 divisors (see below), whose sum is σ = 159960056. Its totient is φ = 40304832.

The previous prime is 80609719. The next prime is 80609729. The reversal of 80609728 is 82790608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80609729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629700 + ... + 629827.

Almost surely, 2^80609728 is an apocalyptic number.

It is an amenable number.

80609728 is a deficient number, since it is larger than the sum of its proper divisors (79350328).

80609728 is a wasteful number, since it uses less digits than its factorization.

80609728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259539 (or 1259529 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 80609728 is about 8978.2920424767. The cubic root of 80609728 is about 431.9788512738.

The spelling of 80609728 in words is "eighty million, six hundred nine thousand, seven hundred twenty-eight".