12847890 has 32 divisors (see below), whose sum is σ = 33638976. Its totient is φ = 3114560.

The previous prime is 12847871. The next prime is 12847921. The reversal of 12847890 is 9874821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19137 + ... + 19796.

It is an arithmetic number, because the mean of its divisors is an integer number (1051218).

Almost surely, 2^12847890 is an apocalyptic number.

12847890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12847890 is an abundant number, since it is smaller than the sum of its proper divisors (20791086).

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

12847890 is a wasteful number, since it uses less digits than its factorization.

12847890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38954.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 12847890 is about 3584.3953464985. The cubic root of 12847890 is about 234.2127876689.

The spelling of 12847890 in words is "twelve million, eight hundred forty-seven thousand, eight hundred ninety".