2285905 has 8 divisors (see below), whose sum is σ = 2904552. Its totient is φ = 1721088.

The previous prime is 2285893. The next prime is 2285911. The reversal of 2285905 is 5095822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1067089 + 1218816 = 1033^2 + 1104^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2285905 - 2¹⁵ = 2253137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13362 + ... + 13531.

It is an arithmetic number, because the mean of its divisors is an integer number (363069).

2^2285905 is an apocalyptic number.

It is an amenable number.

2285905 is a deficient number, since it is larger than the sum of its proper divisors (618647).

2285905 is a wasteful number, since it uses less digits than its factorization.

2285905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26915.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 2285905 is about 1511.9209635427. The cubic root of 2285905 is about 131.7304147500.

The spelling of 2285905 in words is "two million, two hundred eighty-five thousand, nine hundred five".