15806241 has 48 divisors (see below), whose sum is σ = 26357760. Its totient is φ = 9041760.

The previous prime is 15806239. The next prime is 15806257. The reversal of 15806241 is 14260851.

15806241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15806241 - 2¹ = 15806239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15806201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200040 + ... + 200118.

It is an arithmetic number, because the mean of its divisors is an integer number (549120).

Almost surely, 2^15806241 is an apocalyptic number.

15806241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15806241 is a deficient number, since it is larger than the sum of its proper divisors (10551519).

15806241 is a wasteful number, since it uses less digits than its factorization.

15806241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 15806241 is about 3975.7063523354. The cubic root of 15806241 is about 250.9629051597.

The spelling of 15806241 in words is "fifteen million, eight hundred six thousand, two hundred forty-one".