2285978 has 8 divisors (see below), whose sum is σ = 3437472. Its totient is φ = 1140156.

The previous prime is 2285977. The next prime is 2285981. The reversal of 2285978 is 8795822.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2285977) 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, 200 + ... + 2147.

It is an arithmetic number, because the mean of its divisors is an integer number (429684).

2^2285978 is an apocalyptic number.

2285978 is a deficient number, since it is larger than the sum of its proper divisors (1151494).

2285978 is a wasteful number, since it uses less digits than its factorization.

2285978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836.

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

The square root of 2285978 is about 1511.9451048236. The cubic root of 2285978 is about 131.7318169982.

The spelling of 2285978 in words is "two million, two hundred eighty-five thousand, nine hundred seventy-eight".