2577216 has 56 divisors (see below), whose sum is σ = 7055104. Its totient is φ = 829440.

The previous prime is 2577203. The next prime is 2577221. The reversal of 2577216 is 6127752.

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, 5736 + ... + 6168.

It is an arithmetic number, because the mean of its divisors is an integer number (125984).

2^2577216 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 2577216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3527552).

2577216 is an abundant number, since it is smaller than the sum of its proper divisors (4477888).

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

2577216 is a wasteful number, since it uses less digits than its factorization.

2577216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 469 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 2577216 is about 1605.3709851620. The cubic root of 2577216 is about 137.1040465576.

The spelling of 2577216 in words is "two million, five hundred seventy-seven thousand, two hundred sixteen".