80405318 has 32 divisors (see below), whose sum is σ = 141073920. Its totient is φ = 33658560.

The previous prime is 80405279. The next prime is 80405327. The reversal of 80405318 is 81350408.

It is a super-2 number, since 2×80405318² = 12930030325362248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256730 + ... + 257042.

It is an arithmetic number, because the mean of its divisors is an integer number (4408560).

Almost surely, 2^80405318 is an apocalyptic number.

80405318 is a deficient number, since it is larger than the sum of its proper divisors (60668602).

80405318 is a wasteful number, since it uses less digits than its factorization.

80405318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 80405318 is about 8966.9012484804. The cubic root of 80405318 is about 431.6134051414.

The spelling of 80405318 in words is "eighty million, four hundred five thousand, three hundred eighteen".