8157244 has 12 divisors (see below), whose sum is σ = 14402304. Its totient is φ = 4042304.

The previous prime is 8157241. The next prime is 8157257. The reversal of 8157244 is 4427518.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157241) 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 3 ways as a sum of consecutive naturals, for example, 8572 + ... + 9475.

It is an arithmetic number, because the mean of its divisors is an integer number (1200192).

Almost surely, 2^8157244 is an apocalyptic number.

It is an amenable number.

8157244 is a deficient number, since it is larger than the sum of its proper divisors (6245060).

8157244 is a wasteful number, since it uses less digits than its factorization.

8157244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18164 (or 18162 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 8157244 is about 2856.0889341896. The cubic root of 8157244 is about 201.3018739008.

The spelling of 8157244 in words is "eight million, one hundred fifty-seven thousand, two hundred forty-four".