2828765 has 8 divisors (see below), whose sum is σ = 3418200. Its totient is φ = 2247232.

The previous prime is 2828743. The next prime is 2828767. The reversal of 2828765 is 5678282.

It can be written as a sum of positive squares in 4 ways, for example, as 148996 + 2679769 = 386^2 + 1637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2828765 is a prime.

It is a super-2 number, since 2×2828765² = 16003822850450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2828767) 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, 1154 + ... + 2643.

It is an arithmetic number, because the mean of its divisors is an integer number (427275).

2^2828765 is an apocalyptic number.

It is an amenable number.

2828765 is a deficient number, since it is larger than the sum of its proper divisors (589435).

2828765 is a wasteful number, since it uses less digits than its factorization.

2828765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951.

The product of its digits is 53760, while the sum is 38.

The square root of 2828765 is about 1681.8932784217. The cubic root of 2828765 is about 141.4269872673.

The spelling of 2828765 in words is "two million, eight hundred twenty-eight thousand, seven hundred sixty-five".