12157930 has 16 divisors (see below), whose sum is σ = 21980160. Its totient is φ = 4841872.

The previous prime is 12157927. The next prime is 12157933. The reversal of 12157930 is 3975121.

It is an interprime number because it is at equal distance from previous prime (12157927) and next prime (12157933).

It is not an unprimeable number, because it can be changed into a prime (12157933) 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 7 ways as a sum of consecutive naturals, for example, 154 + ... + 4933.

It is an arithmetic number, because the mean of its divisors is an integer number (1373760).

Almost surely, 2^12157930 is an apocalyptic number.

12157930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12157930 is a deficient number, since it is larger than the sum of its proper divisors (9822230).

12157930 is a wasteful number, since it uses less digits than its factorization.

12157930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 12157930 is about 3486.8223355944. The cubic root of 12157930 is about 229.9428339338.

The spelling of 12157930 in words is "twelve million, one hundred fifty-seven thousand, nine hundred thirty".