2861530 has 16 divisors (see below), whose sum is σ = 5886720. Its totient is φ = 981072.

The previous prime is 2861497. The next prime is 2861531. The reversal of 2861530 is 351682.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2861495 and 2861504.

It is not an unprimeable number, because it can be changed into a prime (2861531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20370 + ... + 20509.

It is an arithmetic number, because the mean of its divisors is an integer number (367920).

2^2861530 is an apocalyptic number.

2861530 is an abundant number, since it is smaller than the sum of its proper divisors (3025190).

2861530 is a wasteful number, since it uses less digits than its factorization.

2861530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40893.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2861530 is about 1691.6057460295. The cubic root of 2861530 is about 141.9709323561.

It can be divided in two parts, 286 and 1530, that multiplied together give a triangular number (437580 = T₉₃₅).

The spelling of 2861530 in words is "two million, eight hundred sixty-one thousand, five hundred thirty".