7257256 has 16 divisors (see below), whose sum is σ = 13780800. Its totient is φ = 3582384.

The previous prime is 7257253. The next prime is 7257281. The reversal of 7257256 is 6527527.

It is a happy number.

It is a d-powerful number, because it can be written as 7⁷ + 2⁹ + 5⁶ + 7⁸ + 2¹⁸ + 5⁸ + 6 .

It is not an unprimeable number, because it can be changed into a prime (7257253) 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, 5110 + ... + 6373.

It is an arithmetic number, because the mean of its divisors is an integer number (861300).

Almost surely, 2^7257256 is an apocalyptic number.

It is an amenable number.

7257256 is a deficient number, since it is larger than the sum of its proper divisors (6523544).

7257256 is a wasteful number, since it uses less digits than its factorization.

7257256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11568 (or 11564 counting only the distinct ones).

The product of its digits is 29400, while the sum is 34.

The square root of 7257256 is about 2693.9294719795. The cubic root of 7257256 is about 193.6083785050.

The spelling of 7257256 in words is "seven million, two hundred fifty-seven thousand, two hundred fifty-six".