12641830 has 16 divisors (see below), whose sum is σ = 22848480. Its totient is φ = 5036032.

The previous prime is 12641819. The next prime is 12641833. The reversal of 12641830 is 3814621.

It is a junction number, because it is equal to n+sod(n) for n = 12641795 and 12641804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111 + ... + 5029.

It is an arithmetic number, because the mean of its divisors is an integer number (1428030).

Almost surely, 2^12641830 is an apocalyptic number.

12641830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12641830 is a deficient number, since it is larger than the sum of its proper divisors (10206650).

12641830 is a wasteful number, since it uses less digits than its factorization.

12641830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 12641830 is about 3555.5351214691. The cubic root of 12641830 is about 232.9538980546.

The spelling of 12641830 in words is "twelve million, six hundred forty-one thousand, eight hundred thirty".