13278530 has 32 divisors (see below), whose sum is σ = 26645760. Its totient is φ = 4734720.

The previous prime is 13278497. The next prime is 13278563. The reversal of 13278530 is 3587231.

It is an interprime number because it is at equal distance from previous prime (13278497) and next prime (13278563).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13278493 and 13278502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1175 + ... + 5285.

It is an arithmetic number, because the mean of its divisors is an integer number (832680).

Almost surely, 2^13278530 is an apocalyptic number.

13278530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13278530 is an abundant number, since it is smaller than the sum of its proper divisors (13367230).

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

13278530 is a wasteful number, since it uses less digits than its factorization.

13278530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 13278530 is about 3643.9717342482. The cubic root of 13278530 is about 236.8008914815.

The spelling of 13278530 in words is "thirteen million, two hundred seventy-eight thousand, five hundred thirty".