8423457 has 24 divisors (see below), whose sum is σ = 13237056. Its totient is φ = 4667328.

The previous prime is 8423447. The next prime is 8423461. The reversal of 8423457 is 7543248.

It is not a de Polignac number, because 8423457 - 2⁷ = 8423329 is a prime.

It is a d-powerful number, because it can be written as 8² + 4 + 2²⁰ + 3¹³ + 4³ + 5⁶ + 7⁸ .

8423457 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8423407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28603 + ... + 28895.

It is an arithmetic number, because the mean of its divisors is an integer number (551544).

Almost surely, 2^8423457 is an apocalyptic number.

It is an amenable number.

8423457 is a deficient number, since it is larger than the sum of its proper divisors (4813599).

8423457 is a wasteful number, since it uses less digits than its factorization.

8423457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 340 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 8423457 is about 2902.3192450177. The cubic root of 8423457 is about 203.4683146260.

The spelling of 8423457 in words is "eight million, four hundred twenty-three thousand, four hundred fifty-seven".