12147730 has 16 divisors (see below), whose sum is σ = 24989760. Its totient is φ = 4164912.

The previous prime is 12147727. The next prime is 12147739. The reversal of 12147730 is 3774121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12147695 and 12147704.

It is not an unprimeable number, because it can be changed into a prime (12147739) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 86700 + ... + 86839.

It is an arithmetic number, because the mean of its divisors is an integer number (1561860).

Almost surely, 2^12147730 is an apocalyptic number.

12147730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12147730 is an abundant number, since it is smaller than the sum of its proper divisors (12842030).

12147730 is a wasteful number, since it uses less digits than its factorization.

12147730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173553.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 12147730 is about 3485.3593788876. The cubic root of 12147730 is about 229.8785117695.

The spelling of 12147730 in words is "twelve million, one hundred forty-seven thousand, seven hundred thirty".