2943616 has 64 divisors (see below), whose sum is σ = 6640200. Its totient is φ = 1290240.

The previous prime is 2943607. The next prime is 2943631. The reversal of 2943616 is 6163492.

It can be written as a sum of positive squares in 4 ways, for example, as 1201216 + 1742400 = 1096^2 + 1320^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48226 + ... + 48286.

2^2943616 is an apocalyptic number.

2943616 is a gapful number since it is divisible by the number (26) 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 2943616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3320100).

2943616 is an abundant number, since it is smaller than the sum of its proper divisors (3696584).

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

2943616 is a wasteful number, since it uses less digits than its factorization.

2943616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 105 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 2943616 is about 1715.6969429360. The cubic root of 2943616 is about 143.3156831821.

The spelling of 2943616 in words is "two million, nine hundred forty-three thousand, six hundred sixteen".