12015438 has 16 divisors (see below), whose sum is σ = 24205440. Its totient is φ = 3976056.

The previous prime is 12015433. The next prime is 12015439. The reversal of 12015438 is 83451021.

It is a super-3 number, since 3×12015438³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6370 + ... + 8037.

It is an arithmetic number, because the mean of its divisors is an integer number (1512840).

Almost surely, 2^12015438 is an apocalyptic number.

12015438 is an abundant number, since it is smaller than the sum of its proper divisors (12190002).

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

12015438 is a wasteful number, since it uses less digits than its factorization.

12015438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14551.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 12015438 is about 3466.3291822907. The cubic root of 12015438 is about 229.0409847635.

Adding to 12015438 its reverse (83451021), we get a palindrome (95466459).

The spelling of 12015438 in words is "twelve million, fifteen thousand, four hundred thirty-eight".