2821130 has 16 divisors (see below), whose sum is σ = 5468904. Its totient is φ = 1041600.

The previous prime is 2821109. The next prime is 2821141. The reversal of 2821130 is 311282.

It can be written as a sum of positive squares in 4 ways, for example, as 2301289 + 519841 = 1517^2 + 721^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2821099 and 2821108.

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, 10721 + ... + 10980.

2^2821130 is an apocalyptic number.

2821130 is a deficient number, since it is larger than the sum of its proper divisors (2647774).

2821130 is a wasteful number, since it uses less digits than its factorization.

2821130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21721.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2821130 is about 1679.6219812803. The cubic root of 2821130 is about 141.2996327524.

The spelling of 2821130 in words is "two million, eight hundred twenty-one thousand, one hundred thirty".