12750864 has 80 divisors (see below), whose sum is σ = 38057088. Its totient is φ = 3603456.

The previous prime is 12750863. The next prime is 12750911. The reversal of 12750864 is 46805721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12750863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45894 + ... + 46170.

Almost surely, 2^12750864 is an apocalyptic number.

12750864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12750864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19028544).

12750864 is an abundant number, since it is smaller than the sum of its proper divisors (25306224).

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

12750864 is a wasteful number, since it uses less digits than its factorization.

12750864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 12750864 is about 3570.8351964211. The cubic root of 12750864 is about 233.6217132816.

The spelling of 12750864 in words is "twelve million, seven hundred fifty thousand, eight hundred sixty-four".