2907216 has 60 divisors (see below), whose sum is σ = 8767668. Its totient is φ = 893952.

The previous prime is 2907193. The next prime is 2907217. The reversal of 2907216 is 6127092.

It can be written as a sum of positive squares in 2 ways, for example, as 360000 + 2547216 = 600^2 + 1596^2 .

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 2907216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2907217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1096 + ... + 2648.

2^2907216 is an apocalyptic number.

2907216 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 2907216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4383834).

2907216 is an abundant number, since it is smaller than the sum of its proper divisors (5860452).

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

2907216 is a wasteful number, since it uses less digits than its factorization.

2907216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1571 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2907216 is about 1705.0560108102. The cubic root of 2907216 is about 142.7224963702.

The spelling of 2907216 in words is "two million, nine hundred seven thousand, two hundred sixteen".