2820434 has 4 divisors (see below), whose sum is σ = 4230654. Its totient is φ = 1410216.

The previous prime is 2820407. The next prime is 2820479. The reversal of 2820434 is 4340282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4340282 = 2 ⋅2170141.

It can be written as a sum of positive squares in only one way, i.e., 2175625 + 644809 = 1475^2 + 803^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705107 + ... + 705110.

2^2820434 is an apocalyptic number.

2820434 is a deficient number, since it is larger than the sum of its proper divisors (1410220).

2820434 is a wasteful number, since it uses less digits than its factorization.

2820434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410219.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2820434 is about 1679.4147790227. The cubic root of 2820434 is about 141.2880118022.

The spelling of 2820434 in words is "two million, eight hundred twenty thousand, four hundred thirty-four".