80845378 has 8 divisors (see below), whose sum is σ = 121771980. Its totient is φ = 40254720.

The previous prime is 80845363. The next prime is 80845379. The reversal of 80845378 is 87354808.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 79619929 + 1225449 = 8923^2 + 1107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×80845378³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (80845379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83383 + ... + 84346.

Almost surely, 2^80845378 is an apocalyptic number.

80845378 is a deficient number, since it is larger than the sum of its proper divisors (40926602).

80845378 is a wasteful number, since it uses less digits than its factorization.

80845378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167972.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 80845378 is about 8991.4057855265. The cubic root of 80845378 is about 432.3993827442.

The spelling of 80845378 in words is "eighty million, eight hundred forty-five thousand, three hundred seventy-eight".