12641530 has 32 divisors (see below), whose sum is σ = 25437888. Its totient is φ = 4483200.

The previous prime is 12641509. The next prime is 12641533. The reversal of 12641530 is 3514621.

12641530 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 (22).

It is not an unprimeable number, because it can be changed into a prime (12641533) 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, 3109 + ... + 5911.

It is an arithmetic number, because the mean of its divisors is an integer number (794934).

Almost surely, 2^12641530 is an apocalyptic number.

12641530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12641530 is an abundant number, since it is smaller than the sum of its proper divisors (12796358).

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

12641530 is a wasteful number, since it uses less digits than its factorization.

12641530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12641530 is about 3555.4929334763. The cubic root of 12641530 is about 232.9520553171.

The spelling of 12641530 in words is "twelve million, six hundred forty-one thousand, five hundred thirty".