12015791 has 8 divisors (see below), whose sum is σ = 12359424. Its totient is φ = 11675160.

The previous prime is 12015781. The next prime is 12015803. The reversal of 12015791 is 19751021.

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

It is a cyclic number.

It is not a de Polignac number, because 12015791 - 2²² = 7821487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12015791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015701) 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, 9146 + ... + 10376.

It is an arithmetic number, because the mean of its divisors is an integer number (1544928).

Almost surely, 2^12015791 is an apocalyptic number.

12015791 is a deficient number, since it is larger than the sum of its proper divisors (343633).

12015791 is a wasteful number, since it uses less digits than its factorization.

12015791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 12015791 is about 3466.3801003352. The cubic root of 12015791 is about 229.0432277300.

The spelling of 12015791 in words is "twelve million, fifteen thousand, seven hundred ninety-one".