12840737 has 8 divisors (see below), whose sum is σ = 15804096. Its totient is φ = 10159632.

The previous prime is 12840697. The next prime is 12840743. The reversal of 12840737 is 73704821.

It is a happy number.

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

It is not a de Polignac number, because 12840737 - 2¹⁴ = 12824353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12840337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70463 + ... + 70644.

It is an arithmetic number, because the mean of its divisors is an integer number (1975512).

Almost surely, 2^12840737 is an apocalyptic number.

It is an amenable number.

12840737 is a deficient number, since it is larger than the sum of its proper divisors (2963359).

12840737 is a wasteful number, since it uses less digits than its factorization.

12840737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141127.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 12840737 is about 3583.3974102798. The cubic root of 12840737 is about 234.1693139915.

The spelling of 12840737 in words is "twelve million, eight hundred forty thousand, seven hundred thirty-seven".