2861730 has 40 divisors (see below), whose sum is σ = 7697052. Its totient is φ = 762912.

The previous prime is 2861711. The next prime is 2861737. The reversal of 2861730 is 371682.

2861730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2832489 + 29241 = 1683^2 + 171^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2861694 and 2861703.

It is not an unprimeable number, because it can be changed into a prime (2861737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 957 + ... + 2576.

2^2861730 is an apocalyptic number.

2861730 is an abundant number, since it is smaller than the sum of its proper divisors (4835322).

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

2861730 is a wasteful number, since it uses less digits than its factorization.

2861730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552 (or 3543 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 2861730 is about 1691.6648604260. The cubic root of 2861730 is about 141.9742398554.

It can be divided in two parts, 286 and 1730, that added together give a triangular number (2016 = T₆₃).

The spelling of 2861730 in words is "two million, eight hundred sixty-one thousand, seven hundred thirty".