80505730 has 16 divisors (see below), whose sum is σ = 146266560. Its totient is φ = 31900912.

The previous prime is 80505697. The next prime is 80505749. The reversal of 80505730 is 3750508.

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, 36550 + ... + 38689.

It is an arithmetic number, because the mean of its divisors is an integer number (9141660).

Almost surely, 2^80505730 is an apocalyptic number.

80505730 is a deficient number, since it is larger than the sum of its proper divisors (65760830).

80505730 is a wasteful number, since it uses less digits than its factorization.

80505730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75353.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 80505730 is about 8972.4985371969. The cubic root of 80505730 is about 431.7929999653.

The spelling of 80505730 in words is "eighty million, five hundred five thousand, seven hundred thirty".