12878530 has 16 divisors (see below), whose sum is σ = 26493120. Its totient is φ = 4415472.

The previous prime is 12878521. The next prime is 12878531. The reversal of 12878530 is 3587821.

It is not an unprimeable number, because it can be changed into a prime (12878531) 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, 91920 + ... + 92059.

It is an arithmetic number, because the mean of its divisors is an integer number (1655820).

Almost surely, 2^12878530 is an apocalyptic number.

12878530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12878530 is an abundant number, since it is smaller than the sum of its proper divisors (13614590).

12878530 is a wasteful number, since it uses less digits than its factorization.

12878530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183993.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 12878530 is about 3588.6668833983. Note that the first 3 decimals coincide. The cubic root of 12878530 is about 234.3988255483.

The spelling of 12878530 in words is "twelve million, eight hundred seventy-eight thousand, five hundred thirty".