1457938 has 4 divisors (see below), whose sum is σ = 2186910. Its totient is φ = 728968.

The previous prime is 1457933. The next prime is 1457941. The reversal of 1457938 is 8397541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8397541 = 17 ⋅493973.

It can be written as a sum of positive squares in only one way, i.e., 1456849 + 1089 = 1207^2 + 33^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1457897 and 1457906.

It is not an unprimeable number, because it can be changed into a prime (1457933) by changing a digit.

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, 364483 + ... + 364486.

2^1457938 is an apocalyptic number.

1457938 is a deficient number, since it is larger than the sum of its proper divisors (728972).

1457938 is an equidigital number, since it uses as much as digits as its factorization.

1457938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728971.

The product of its digits is 30240, while the sum is 37.

The square root of 1457938 is about 1207.4510342039. The cubic root of 1457938 is about 113.3912871611.

The spelling of 1457938 in words is "one million, four hundred fifty-seven thousand, nine hundred thirty-eight".