2179280 has 20 divisors (see below), whose sum is σ = 5067012. Its totient is φ = 871680.

The previous prime is 2179279. The next prime is 2179291. The reversal of 2179280 is 829712.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1700416 + 478864 = 1304^2 + 692^2 .

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

It is a super-2 number, since 2×2179280² = 9498522636800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

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, 13541 + ... + 13700.

2^2179280 is an apocalyptic number.

2179280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2179280 is an abundant number, since it is smaller than the sum of its proper divisors (2887732).

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

2179280 is a wasteful number, since it uses less digits than its factorization.

2179280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27254 (or 27248 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2179280 is about 1476.2384631217. The cubic root of 2179280 is about 129.6495492090.

The spelling of 2179280 in words is "two million, one hundred seventy-nine thousand, two hundred eighty".