2820130 has 32 divisors (see below), whose sum is σ = 5493744. Its totient is φ = 1038336.

The previous prime is 2820127. The next prime is 2820131. The reversal of 2820130 is 310282.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 962361 + 1857769 = 981^2 + 1363^2 .

It is not an unprimeable number, because it can be changed into a prime (2820131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8854 + ... + 9166.

2^2820130 is an apocalyptic number.

2820130 is a deficient number, since it is larger than the sum of its proper divisors (2673614).

2820130 is a wasteful number, since it uses less digits than its factorization.

2820130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2820130 is about 1679.3242688653. The cubic root of 2820130 is about 141.2829353851.

The spelling of 2820130 in words is "two million, eight hundred twenty thousand, one hundred thirty".