278130 has 32 divisors (see below), whose sum is σ = 681984. Its totient is φ = 72576.

The previous prime is 278123. The next prime is 278143. The reversal of 278130 is 31872.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 278097 and 278106.

It is a congruent number.

It is an unprimeable number.

278130 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, 2127 + ... + 2253.

It is an arithmetic number, because the mean of its divisors is an integer number (21312).

2²⁷⁸¹³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340992).

278130 is an abundant number, since it is smaller than the sum of its proper divisors (403854).

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

278130 is a wasteful number, since it uses less digits than its factorization.

278130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 278130 is about 527.3803181766. The cubic root of 278130 is about 65.2753604390.

The spelling of 278130 in words is "two hundred seventy-eight thousand, one hundred thirty".