801378 has 18 divisors (see below), whose sum is σ = 1744587. Its totient is φ = 265860.

The previous prime is 801371. The next prime is 801379. The reversal of 801378 is 873108.

It can be written as a sum of positive squares in only one way, i.e., 400689 + 400689 = 633^2 + 633^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=633.

It is not an unprimeable number, because it can be changed into a prime (801371) by changing a digit.

801378 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3693 + ... + 3903.

2⁸⁰¹³⁷⁸ is an apocalyptic number.

801378 is an abundant number, since it is smaller than the sum of its proper divisors (943209).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

801378 is a wasteful number, since it uses less digits than its factorization.

801378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 801378 is about 895.1971849822. The cubic root of 801378 is about 92.8850470097.

The spelling of 801378 in words is "eight hundred one thousand, three hundred seventy-eight".