378081 has 32 divisors (see below), whose sum is σ = 652800. Its totient is φ = 213840.

The previous prime is 378071. The next prime is 378083. The reversal of 378081 is 180873.

It is a de Polignac number, because none of the positive numbers 2^k-378081 is a prime.

It is a super-2 number, since 2×378081² = 285890485122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (378083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5610 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (20400).

2³⁷⁸⁰⁸¹ is an apocalyptic number.

It is an amenable number.

378081 is a deficient number, since it is larger than the sum of its proper divisors (274719).

378081 is a wasteful number, since it uses less digits than its factorization.

378081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 100 counting only the distinct ones).

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

The square root of 378081 is about 614.8829156840. The cubic root of 378081 is about 72.3094321470.

It can be divided in two parts, 37 and 8081, that added together give a palindrome (8118).

The spelling of 378081 in words is "three hundred seventy-eight thousand, eighty-one".