1138856 has 8 divisors (see below), whose sum is σ = 2135370. Its totient is φ = 569424.

The previous prime is 1138853. The next prime is 1138867. The reversal of 1138856 is 6588311.

It can be written as a sum of positive squares in only one way, i.e., 1136356 + 2500 = 1066^2 + 50^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1138853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71171 + ... + 71186.

2^1138856 is an apocalyptic number.

It is an amenable number.

1138856 is a deficient number, since it is larger than the sum of its proper divisors (996514).

1138856 is a wasteful number, since it uses less digits than its factorization.

1138856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142363 (or 142359 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 1138856 is about 1067.1719636497. The cubic root of 1138856 is about 104.4294373422.

The spelling of 1138856 in words is "one million, one hundred thirty-eight thousand, eight hundred fifty-six".