80509928 has 32 divisors (see below), whose sum is σ = 156629160. Its totient is φ = 38764800.

The previous prime is 80509879. The next prime is 80509939. The reversal of 80509928 is 82990508.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 79959364 + 550564 = 8942^2 + 742^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28550 + ... + 31242.

Almost surely, 2^80509928 is an apocalyptic number.

It is an amenable number.

80509928 is a deficient number, since it is larger than the sum of its proper divisors (76119232).

80509928 is a wasteful number, since it uses less digits than its factorization.

80509928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837 (or 2833 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 80509928 is about 8972.7324712152. The cubic root of 80509928 is about 431.8005051681.

The spelling of 80509928 in words is "eighty million, five hundred nine thousand, nine hundred twenty-eight".