8457238 has 16 divisors (see below), whose sum is σ = 13597920. Its totient is φ = 3934656.

The previous prime is 8457233. The next prime is 8457247. The reversal of 8457238 is 8327548.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 8457197 and 8457206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8457233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 783 + ... + 4186.

It is an arithmetic number, because the mean of its divisors is an integer number (849870).

Almost surely, 2^8457238 is an apocalyptic number.

8457238 is a deficient number, since it is larger than the sum of its proper divisors (5140682).

8457238 is a wasteful number, since it uses less digits than its factorization.

8457238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031.

The product of its digits is 53760, while the sum is 37.

The square root of 8457238 is about 2908.1330781104. The cubic root of 8457238 is about 203.7399448034.

The spelling of 8457238 in words is "eight million, four hundred fifty-seven thousand, two hundred thirty-eight".