1383616 has 28 divisors (see below), whose sum is σ = 2958592. Its totient is φ = 638208.

The previous prime is 1383607. The next prime is 1383653. The reversal of 1383616 is 6163831.

1383616 is a nontrivial binomial coefficient, being equal to C(1664, 2).

It is a congruent number.

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, 1 + ... + 1663.

It is an arithmetic number, because the mean of its divisors is an integer number (105664).

2^1383616 is an apocalyptic number.

1383616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1383616 is the 1663-rd triangular number and also the 832-nd hexagonal number.

1383616 is the 555-th centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1383616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1479296).

1383616 is an abundant number, since it is smaller than the sum of its proper divisors (1574976).

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

1383616 is a wasteful number, since it uses less digits than its factorization.

1383616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1678 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 1383616 is about 1176.2720773699. The cubic root of 1383616 is about 111.4307854668.

The spelling of 1383616 in words is "one million, three hundred eighty-three thousand, six hundred sixteen".