1385436 has 48 divisors (see below), whose sum is σ = 3556224. Its totient is φ = 417216.

The previous prime is 1385429. The next prime is 1385437. The reversal of 1385436 is 6345831.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

1385436 is a Rhonda number in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385437) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12895 + ... + 13001.

It is an arithmetic number, because the mean of its divisors is an integer number (74088).

2^1385436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1385436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1778112).

1385436 is an abundant number, since it is smaller than the sum of its proper divisors (2170788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1385436 is a wasteful number, since it uses less digits than its factorization.

1385436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 208 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 1385436 is about 1177.0454536678. The cubic root of 1385436 is about 111.4796225170.

The spelling of 1385436 in words is "one million, three hundred eighty-five thousand, four hundred thirty-six".