1385306 has 8 divisors (see below), whose sum is σ = 2237844. Its totient is φ = 639360.

The previous prime is 1385303. The next prime is 1385327. The reversal of 1385306 is 6035831.

It can be written as a sum of positive squares in 2 ways, for example, as 1343281 + 42025 = 1159^2 + 205^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 53281 = 1385306 / (1 + 3 + 8 + 5 + 3 + 0 + 6).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1385303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26615 + ... + 26666.

2^1385306 is an apocalyptic number.

1385306 is a deficient number, since it is larger than the sum of its proper divisors (852538).

1385306 is a wasteful number, since it uses less digits than its factorization.

1385306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53296.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1385306 is about 1176.9902293562. The cubic root of 1385306 is about 111.4761355751.

Subtracting from 1385306 its sum of digits (26), we obtain a triangular number (1385280 = T₁₆₆₄).

The spelling of 1385306 in words is "one million, three hundred eighty-five thousand, three hundred six".