12016538 has 8 divisors (see below), whose sum is σ = 18044532. Its totient is φ = 6001696.

The previous prime is 12016507. The next prime is 12016541. The reversal of 12016538 is 83561021.

It can be written as a sum of positive squares in 2 ways, for example, as 11175649 + 840889 = 3343^2 + 917^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545 + ... + 4932.

Almost surely, 2^12016538 is an apocalyptic number.

12016538 is a deficient number, since it is larger than the sum of its proper divisors (6027994).

12016538 is a wasteful number, since it uses less digits than its factorization.

12016538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6576.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12016538 is about 3466.4878479522. The cubic root of 12016538 is about 229.0479740327.

Adding to 12016538 its reverse (83561021), we get a palindrome (95577559).

The spelling of 12016538 in words is "twelve million, sixteen thousand, five hundred thirty-eight".