12809070 has 32 divisors (see below), whose sum is σ = 34158240. Its totient is φ = 3415680.

The previous prime is 12809057. The next prime is 12809101. The reversal of 12809070 is 7090821.

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

It is a Curzon number.

It is a congruent number.

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, 23451 + ... + 23990.

It is an arithmetic number, because the mean of its divisors is an integer number (1067445).

Almost surely, 2^12809070 is an apocalyptic number.

12809070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12809070 is an abundant number, since it is smaller than the sum of its proper divisors (21349170).

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

12809070 is a wasteful number, since it uses less digits than its factorization.

12809070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47457 (or 47451 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 12809070 is about 3578.9761105657. The cubic root of 12809070 is about 233.9766577637.

Adding to 12809070 its reverse (7090821), we get a palindrome (19899891).

The spelling of 12809070 in words is "twelve million, eight hundred nine thousand, seventy".