2278985 has 8 divisors (see below), whose sum is σ = 2801736. Its totient is φ = 1778560.

The previous prime is 2278981. The next prime is 2279009. The reversal of 2278985 is 5898722.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 76729 + 2202256 = 277^2 + 1484^2 .

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

It is not a de Polignac number, because 2278985 - 2² = 2278981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5354 + ... + 5763.

It is an arithmetic number, because the mean of its divisors is an integer number (350217).

2^2278985 is an apocalyptic number.

It is an amenable number.

2278985 is a deficient number, since it is larger than the sum of its proper divisors (522751).

2278985 is a wasteful number, since it uses less digits than its factorization.

2278985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11163.

The product of its digits is 80640, while the sum is 41.

The square root of 2278985 is about 1509.6307495543. The cubic root of 2278985 is about 131.5973535374.

The spelling of 2278985 in words is "two million, two hundred seventy-eight thousand, nine hundred eighty-five".