103278289 has 8 divisors (see below), whose sum is σ = 105159008. Its totient is φ = 101407680.

The previous prime is 103278239. The next prime is 103278323. The reversal of 103278289 is 982872301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103278289 - 2¹⁷ = 103147217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103278209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19849 + ... + 24505.

It is an arithmetic number, because the mean of its divisors is an integer number (13144876).

Almost surely, 2^103278289 is an apocalyptic number.

It is an amenable number.

103278289 is a deficient number, since it is larger than the sum of its proper divisors (1880719).

103278289 is an equidigital number, since it uses as much as digits as its factorization.

103278289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 103278289 is about 10162.5926318042. The cubic root of 103278289 is about 469.1766011748.

The spelling of 103278289 in words is "one hundred three million, two hundred seventy-eight thousand, two hundred eighty-nine".