278379 has 6 divisors (see below), whose sum is σ = 402116. Its totient is φ = 185580.

The previous prime is 278363. The next prime is 278387. The reversal of 278379 is 973872.

It is not a de Polignac number, because 278379 - 2⁴ = 278363 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (278329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15457 + ... + 15474.

2²⁷⁸³⁷⁹ is an apocalyptic number.

278379 is a deficient number, since it is larger than the sum of its proper divisors (123737).

278379 is a wasteful number, since it uses less digits than its factorization.

278379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30937 (or 30934 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 278379 is about 527.6163378820. The cubic root of 278379 is about 65.2948342063.

The spelling of 278379 in words is "two hundred seventy-eight thousand, three hundred seventy-nine".