8278457 has 12 divisors (see below), whose sum is σ = 9397248. Its totient is φ = 7279800.

The previous prime is 8278421. The next prime is 8278477. The reversal of 8278457 is 7548728.

It is not a de Polignac number, because 8278457 - 2⁶ = 8278393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8278477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2648 + ... + 4854.

It is an arithmetic number, because the mean of its divisors is an integer number (783104).

Almost surely, 2^8278457 is an apocalyptic number.

It is an amenable number.

8278457 is a deficient number, since it is larger than the sum of its proper divisors (1118791).

8278457 is a wasteful number, since it uses less digits than its factorization.

8278457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2249 counting only the distinct ones).

The product of its digits is 125440, while the sum is 41.

The square root of 8278457 is about 2877.2307867114. The cubic root of 8278457 is about 202.2940608166.

The spelling of 8278457 in words is "eight million, two hundred seventy-eight thousand, four hundred fifty-seven".