1381436 has 24 divisors (see below), whose sum is σ = 2795520. Its totient is φ = 585072.

The previous prime is 1381427. The next prime is 1381439. The reversal of 1381436 is 6341831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381439) 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, 2645 + ... + 3123.

It is an arithmetic number, because the mean of its divisors is an integer number (116480).

2^1381436 is an apocalyptic number.

It is an amenable number.

1381436 is an abundant number, since it is smaller than the sum of its proper divisors (1414084).

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

1381436 is a wasteful number, since it uses less digits than its factorization.

1381436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 591 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 1381436 is about 1175.3450557177. The cubic root of 1381436 is about 111.3722319366.

The spelling of 1381436 in words is "one million, three hundred eighty-one thousand, four hundred thirty-six".