278382 has 32 divisors (see below), whose sum is σ = 620928. Its totient is φ = 82656.

The previous prime is 278363. The next prime is 278387. The reversal of 278382 is 283872.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278387) by changing a digit.

278382 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 15 ways as a sum of consecutive naturals, for example, 3313 + ... + 3395.

It is an arithmetic number, because the mean of its divisors is an integer number (19404).

2²⁷⁸³⁸² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310464).

278382 is an abundant number, since it is smaller than the sum of its proper divisors (342546).

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

278382 is a wasteful number, since it uses less digits than its factorization.

278382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144.

The product of its digits is 5376, while the sum is 30.

The square root of 278382 is about 527.6191808492. The cubic root of 278382 is about 65.2950687592.

The spelling of 278382 in words is "two hundred seventy-eight thousand, three hundred eighty-two".