1238738 has 6 divisors (see below), whose sum is σ = 1860471. Its totient is φ = 618582.

The previous prime is 1238719. The next prime is 1238747. The reversal of 1238738 is 8378321.

It can be written as a sum of positive squares in only one way, i.e., 619369 + 619369 = 787^2 + 787^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=787.

It is a Duffinian number.

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 in 2 ways as a sum of consecutive naturals, for example, 1181 + ... + 1967.

2^1238738 is an apocalyptic number.

1238738 is a deficient number, since it is larger than the sum of its proper divisors (621733).

1238738 is an frugal number, since it uses more digits than its factorization.

1238738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 789 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 1238738 is about 1112.9860735876. The cubic root of 1238738 is about 107.3972481312.

Multiplying 1238738 by its sum of digits (32), we get a square (39639616 = 6296²).

The spelling of 1238738 in words is "one million, two hundred thirty-eight thousand, seven hundred thirty-eight".