7457938 has 4 divisors (see below), whose sum is σ = 11186910. Its totient is φ = 3728968.

The previous prime is 7457929. The next prime is 7457953. The reversal of 7457938 is 8397547.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6285049 + 1172889 = 2507^2 + 1083^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7457894 and 7457903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864483 + ... + 1864486.

Almost surely, 2^7457938 is an apocalyptic number.

7457938 is a deficient number, since it is larger than the sum of its proper divisors (3728972).

7457938 is a wasteful number, since it uses less digits than its factorization.

7457938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728971.

The product of its digits is 211680, while the sum is 43.

The square root of 7457938 is about 2730.9225547423. The cubic root of 7457938 is about 195.3767688187.

The spelling of 7457938 in words is "seven million, four hundred fifty-seven thousand, nine hundred thirty-eight".