2815930 has 16 divisors (see below), whose sum is σ = 5458824. Its totient is φ = 1039680.

The previous prime is 2815927. The next prime is 2815937. The reversal of 2815930 is 395182.

It can be written as a sum of positive squares in 4 ways, for example, as 1495729 + 1320201 = 1223^2 + 1149^2 .

It is not an unprimeable number, because it can be changed into a prime (2815937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10701 + ... + 10960.

2^2815930 is an apocalyptic number.

2815930 is a deficient number, since it is larger than the sum of its proper divisors (2642894).

2815930 is a wasteful number, since it uses less digits than its factorization.

2815930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21681.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2815930 is about 1678.0732999485. The cubic root of 2815930 is about 141.2127633068.

It can be divided in two parts, 28 and 15930, that multiplied together give a triangular number (446040 = T₉₄₄).

The spelling of 2815930 in words is "two million, eight hundred fifteen thousand, nine hundred thirty".