1616340 has 96 divisors (see below), whose sum is σ = 5160960. Its totient is φ = 374400.

The previous prime is 1616297. The next prime is 1616347. The reversal of 1616340 is 436161.

It is a super-2 number, since 2×1616340² = 5225109991200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20421 + ... + 20499.

It is an arithmetic number, because the mean of its divisors is an integer number (53760).

2^1616340 is an apocalyptic number.

1616340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1616340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2580480).

1616340 is an abundant number, since it is smaller than the sum of its proper divisors (3544620).

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

1616340 is a wasteful number, since it uses less digits than its factorization.

1616340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1616340 is about 1271.3536093471. The cubic root of 1616340 is about 117.3575155334.

The spelling of 1616340 in words is "one million, six hundred sixteen thousand, three hundred forty".