80304905 has 16 divisors (see below), whose sum is σ = 99823104. Its totient is φ = 61978560.

The previous prime is 80304901. The next prime is 80304941. The reversal of 80304905 is 50940308.

It is not a de Polignac number, because 80304905 - 2² = 80304901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80304901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14279 + ... + 19091.

It is an arithmetic number, because the mean of its divisors is an integer number (6238944).

Almost surely, 2^80304905 is an apocalyptic number.

It is an amenable number.

80304905 is a deficient number, since it is larger than the sum of its proper divisors (19518199).

80304905 is a wasteful number, since it uses less digits than its factorization.

80304905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 80304905 is about 8961.3004078649. The cubic root of 80304905 is about 431.4336589431.

The spelling of 80304905 in words is "eighty million, three hundred four thousand, nine hundred five".