2831428 has 6 divisors (see below), whose sum is σ = 4955006. Its totient is φ = 1415712.

The previous prime is 2831417. The next prime is 2831429. The reversal of 2831428 is 8241382.

It can be written as a sum of positive squares in only one way, i.e., 2829124 + 2304 = 1682^2 + 48^2 .

It is a d-powerful number, because it can be written as 2¹⁹ + 8 + 3¹¹ + 1 + 4³ + 2²¹ + 8⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 2831396 and 2831405.

It is not an unprimeable number, because it can be changed into a prime (2831429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353925 + ... + 353932.

2^2831428 is an apocalyptic number.

It is an amenable number.

2831428 is a deficient number, since it is larger than the sum of its proper divisors (2123578).

2831428 is a wasteful number, since it uses less digits than its factorization.

2831428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707861 (or 707859 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 2831428 is about 1682.6847595435. The cubic root of 2831428 is about 141.4713531473.

It can be divided in two parts, 283 and 1428, that added together give a triangular number (1711 = T₅₈).

The spelling of 2831428 in words is "two million, eight hundred thirty-one thousand, four hundred twenty-eight".