12017147 has 8 divisors (see below), whose sum is σ = 12794112. Its totient is φ = 11248000.

The previous prime is 12017143. The next prime is 12017149. The reversal of 12017147 is 74171021.

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 12017147 - 2² = 12017143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12017143) 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, 1397 + ... + 5097.

It is an arithmetic number, because the mean of its divisors is an integer number (1599264).

Almost surely, 2^12017147 is an apocalyptic number.

12017147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12017147 is a deficient number, since it is larger than the sum of its proper divisors (776965).

12017147 is a wasteful number, since it uses less digits than its factorization.

12017147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 12017147 is about 3466.5756879087. The cubic root of 12017147 is about 229.0518433629.

Adding to 12017147 its reverse (74171021), we get a palindrome (86188168).

The spelling of 12017147 in words is "twelve million, seventeen thousand, one hundred forty-seven".