2215760 has 20 divisors (see below), whose sum is σ = 5151828. Its totient is φ = 886272.

The previous prime is 2215699. The next prime is 2215777. The reversal of 2215760 is 675122.

It can be written as a sum of positive squares in 2 ways, for example, as 300304 + 1915456 = 548^2 + 1384^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13769 + ... + 13928.

2^2215760 is an apocalyptic number.

2215760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215760 is an abundant number, since it is smaller than the sum of its proper divisors (2936068).

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

2215760 is a wasteful number, since it uses less digits than its factorization.

2215760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27710 (or 27704 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2215760 is about 1488.5429117093. The cubic root of 2215760 is about 130.3689715026.

The spelling of 2215760 in words is "two million, two hundred fifteen thousand, seven hundred sixty".