8257198 has 4 divisors (see below), whose sum is σ = 12385800. Its totient is φ = 4128598.

The previous prime is 8257177. The next prime is 8257217. The reversal of 8257198 is 8917528.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×8257198² = 136362637622408, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8257198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2064298 + ... + 2064301.

It is an arithmetic number, because the mean of its divisors is an integer number (3096450).

Almost surely, 2^8257198 is an apocalyptic number.

8257198 is a deficient number, since it is larger than the sum of its proper divisors (4128602).

8257198 is a wasteful number, since it uses less digits than its factorization.

8257198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128601.

The product of its digits is 40320, while the sum is 40.

The square root of 8257198 is about 2873.5340610475. The cubic root of 8257198 is about 202.1207492935.

The spelling of 8257198 in words is "eight million, two hundred fifty-seven thousand, one hundred ninety-eight".