2159616 has 88 divisors (see below), whose sum is σ = 6222880. Its totient is φ = 663552.

The previous prime is 2159609. The next prime is 2159621. The reversal of 2159616 is 6169512.

2159616 = T₃₂₃ + T₃₂₄ + ... + T₃₅₉.

It is an Ulam number.

It is a congruent number.

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, 58350 + ... + 58386.

2^2159616 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 2159616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3111440).

2159616 is an abundant number, since it is smaller than the sum of its proper divisors (4063264).

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

2159616 is a wasteful number, since it uses less digits than its factorization.

2159616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 61 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 2159616 is about 1469.5632004102. The cubic root of 2159616 is about 129.2584207357.

It can be divided in two parts, 21596 and 16, that added together give a palindrome (21612).

The spelling of 2159616 in words is "two million, one hundred fifty-nine thousand, six hundred sixteen".