12850721 has 8 divisors (see below), whose sum is σ = 14441280. Its totient is φ = 11346192.

The previous prime is 12850711. The next prime is 12850727. The reversal of 12850721 is 12705821.

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

It is not a de Polignac number, because 12850721 - 2¹⁸ = 12588577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12850727) 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, 21191 + ... + 21788.

It is an arithmetic number, because the mean of its divisors is an integer number (1805160).

Almost surely, 2^12850721 is an apocalyptic number.

It is an amenable number.

12850721 is a deficient number, since it is larger than the sum of its proper divisors (1590559).

12850721 is a wasteful number, since it uses less digits than its factorization.

12850721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43015.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 12850721 is about 3584.7902309619. The cubic root of 12850721 is about 234.2299891369.

The spelling of 12850721 in words is "twelve million, eight hundred fifty thousand, seven hundred twenty-one".