1387116 has 36 divisors (see below), whose sum is σ = 3577392. Its totient is φ = 453024.

The previous prime is 1387109. The next prime is 1387117. The reversal of 1387116 is 6117831.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1387116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1545 + ... + 2271.

It is an arithmetic number, because the mean of its divisors is an integer number (99372).

2^1387116 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 1387116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788696).

1387116 is an abundant number, since it is smaller than the sum of its proper divisors (2190276).

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

1387116 is a wasteful number, since it uses less digits than its factorization.

1387116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 785 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 1387116 is about 1177.7588887374. The cubic root of 1387116 is about 111.5246649236.

The spelling of 1387116 in words is "one million, three hundred eighty-seven thousand, one hundred sixteen".