2865229 has 4 divisors (see below), whose sum is σ = 2964060. Its totient is φ = 2766400.

The previous prime is 2865211. The next prime is 2865241. The reversal of 2865229 is 9225682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1885129 + 980100 = 1373^2 + 990^2 .

It is a cyclic number.

It is not a de Polignac number, because 2865229 - 2⁹ = 2864717 is a prime.

It is a Duffinian number.

2865229 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2865194 and 2865203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49372 + ... + 49429.

It is an arithmetic number, because the mean of its divisors is an integer number (741015).

2^2865229 is an apocalyptic number.

2865229 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2865229 is a deficient number, since it is larger than the sum of its proper divisors (98831).

2865229 is an equidigital number, since it uses as much as digits as its factorization.

2865229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98830.

The product of its digits is 17280, while the sum is 34.

The square root of 2865229 is about 1692.6987327933. The cubic root of 2865229 is about 142.0320796398.

It can be divided in two parts, 2865 and 229, that multiplied together give a triangular number (656085 = T₁₁₄₅).

The spelling of 2865229 in words is "two million, eight hundred sixty-five thousand, two hundred twenty-nine".