12681090 has 64 divisors (see below), whose sum is σ = 34369920. Its totient is φ = 3326400.

The previous prime is 12681089. The next prime is 12681103. The reversal of 12681090 is 9018621.

12681090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17740 + ... + 18440.

It is an arithmetic number, because the mean of its divisors is an integer number (537030).

Almost surely, 2^12681090 is an apocalyptic number.

12681090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12681090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17184960).

12681090 is an abundant number, since it is smaller than the sum of its proper divisors (21688830).

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

12681090 is a wasteful number, since it uses less digits than its factorization.

12681090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 12681090 is about 3561.0518109121. The cubic root of 12681090 is about 233.1947998531.

The spelling of 12681090 in words is "twelve million, six hundred eighty-one thousand, ninety".