12347530 has 32 divisors (see below), whose sum is σ = 25200000. Its totient is φ = 4318272.

The previous prime is 12347501. The next prime is 12347557. The reversal of 12347530 is 3574321.

It is a super-2 number, since 2×12347530² = 304922994201800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12347495 and 12347504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30 + ... + 4969.

It is an arithmetic number, because the mean of its divisors is an integer number (787500).

Almost surely, 2^12347530 is an apocalyptic number.

12347530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12347530 is an abundant number, since it is smaller than the sum of its proper divisors (12852470).

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

12347530 is a wasteful number, since it uses less digits than its factorization.

12347530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 12347530 is about 3513.9052349203. The cubic root of 12347530 is about 231.1319748348.

The spelling of 12347530 in words is "twelve million, three hundred forty-seven thousand, five hundred thirty".