12015930 has 32 divisors (see below), whose sum is σ = 28957824. Its totient is φ = 3190976.

The previous prime is 12015919. The next prime is 12015931. The reversal of 12015930 is 3951021.

12015930 = 38² + 39² + ... + 330².

It is a junction number, because it is equal to n+sod(n) for n = 12015897 and 12015906.

It is not an unprimeable number, because it can be changed into a prime (12015931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8107 + ... + 9473.

It is an arithmetic number, because the mean of its divisors is an integer number (904932).

Almost surely, 2^12015930 is an apocalyptic number.

12015930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12015930 is an abundant number, since it is smaller than the sum of its proper divisors (16941894).

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

12015930 is a wasteful number, since it uses less digits than its factorization.

12015930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 12015930 is about 3466.4001500115. The cubic root of 12015930 is about 229.0441109257.

Adding to 12015930 its reverse (3951021), we get a palindrome (15966951).

The spelling of 12015930 in words is "twelve million, fifteen thousand, nine hundred thirty".