7457238 has 32 divisors (see below), whose sum is σ = 16679520. Its totient is φ = 2469600.

The previous prime is 7457231. The next prime is 7457243. The reversal of 7457238 is 8327547.

It is a super-2 number, since 2×7457238² = 111220797177288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7457231) 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 15 ways as a sum of consecutive naturals, for example, 10288 + ... + 10988.

It is an arithmetic number, because the mean of its divisors is an integer number (521235).

Almost surely, 2^7457238 is an apocalyptic number.

7457238 is an abundant number, since it is smaller than the sum of its proper divisors (9222282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7457238 is a wasteful number, since it uses less digits than its factorization.

7457238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 903 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 7457238 is about 2730.7943899166. The cubic root of 7457238 is about 195.3706559576.

The spelling of 7457238 in words is "seven million, four hundred fifty-seven thousand, two hundred thirty-eight".