7256438 has 32 divisors (see below), whose sum is σ = 13124160. Its totient is φ = 2943360.

The previous prime is 7256401. The next prime is 7256497. The reversal of 7256438 is 8346527.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7256398 and 7256407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24620 + ... + 24912.

It is an arithmetic number, because the mean of its divisors is an integer number (410130).

Almost surely, 2^7256438 is an apocalyptic number.

7256438 is a deficient number, since it is larger than the sum of its proper divisors (5867722).

7256438 is a wasteful number, since it uses less digits than its factorization.

7256438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392.

The product of its digits is 40320, while the sum is 35.

The square root of 7256438 is about 2693.7776448697. Note that the first 3 decimals coincide. The cubic root of 7256438 is about 193.6011040565.

The spelling of 7256438 in words is "seven million, two hundred fifty-six thousand, four hundred thirty-eight".