278652 has 24 divisors (see below), whose sum is σ = 709632. Its totient is φ = 84400.

The previous prime is 278651. The next prime is 278671. The reversal of 278652 is 256872.

It is a d-powerful number, because it can be written as 2¹⁴ + 7² + 6 + 8² + 5 + 2¹⁸ .

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (29568).

2²⁷⁸⁶⁵² is an apocalyptic number.

278652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

278652 is an abundant number, since it is smaller than the sum of its proper divisors (430980).

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

278652 is a wasteful number, since it uses less digits than its factorization.

278652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129 (or 2127 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 278652 is about 527.8749852001. The cubic root of 278652 is about 65.3161716227.

The spelling of 278652 in words is "two hundred seventy-eight thousand, six hundred fifty-two".