12172930 has 32 divisors (see below), whose sum is σ = 27319680. Its totient is φ = 3793920.

The previous prime is 12172921. The next prime is 12172933. The reversal of 12172930 is 3927121.

It is a junction number, because it is equal to n+sod(n) for n = 12172895 and 12172904.

It is not an unprimeable number, because it can be changed into a prime (12172933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7135 + ... + 8674.

It is an arithmetic number, because the mean of its divisors is an integer number (853740).

Almost surely, 2^12172930 is an apocalyptic number.

12172930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12172930 is an abundant number, since it is smaller than the sum of its proper divisors (15146750).

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

12172930 is a wasteful number, since it uses less digits than its factorization.

12172930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15834.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 12172930 is about 3488.9726281529. The cubic root of 12172930 is about 230.0373600307.

The spelling of 12172930 in words is "twelve million, one hundred seventy-two thousand, nine hundred thirty".