2745216 has 48 divisors (see below), whose sum is σ = 7902960. Its totient is φ = 914688.

The previous prime is 2745209. The next prime is 2745229. The reversal of 2745216 is 6125472.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a self number, because there is not a number n which added to its sum of digits gives 2745216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (164645).

2^2745216 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 2745216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3951480).

2745216 is an abundant number, since it is smaller than the sum of its proper divisors (5157744).

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

2745216 is a wasteful number, since it uses less digits than its factorization.

2745216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403 (or 2388 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2745216 is about 1656.8693370329. The cubic root of 2745216 is about 140.0206772180.

The spelling of 2745216 in words is "two million, seven hundred forty-five thousand, two hundred sixteen".