1138748 has 24 divisors (see below), whose sum is σ = 2187360. Its totient is φ = 515520.

The previous prime is 1138741. The next prime is 1138751. The reversal of 1138748 is 8478311.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2993 + ... + 3351.

It is an arithmetic number, because the mean of its divisors is an integer number (91140).

2^1138748 is an apocalyptic number.

It is an amenable number.

1138748 is a deficient number, since it is larger than the sum of its proper divisors (1048612).

1138748 is a wasteful number, since it uses less digits than its factorization.

1138748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 435 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 1138748 is about 1067.1213614205. The cubic root of 1138748 is about 104.4261361534.

The spelling of 1138748 in words is "one million, one hundred thirty-eight thousand, seven hundred forty-eight".