1138306 has 8 divisors (see below), whose sum is σ = 1838844. Its totient is φ = 525360.

The previous prime is 1138273. The next prime is 1138363. The reversal of 1138306 is 6038311.

It can be written as a sum of positive squares in 2 ways, for example, as 1113025 + 25281 = 1055^2 + 159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21865 + ... + 21916.

2^1138306 is an apocalyptic number.

1138306 is a deficient number, since it is larger than the sum of its proper divisors (700538).

1138306 is a wasteful number, since it uses less digits than its factorization.

1138306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43796.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1138306 is about 1066.9142421020. The cubic root of 1138306 is about 104.4126235574.

It can be divided in two parts, 1138 and 306, that added together give a square (1444 = 38²).

The spelling of 1138306 in words is "one million, one hundred thirty-eight thousand, three hundred six".