2287778 has 8 divisors (see below), whose sum is σ = 3459072. Its totient is φ = 1134756.

The previous prime is 2287777. The next prime is 2287807. The reversal of 2287778 is 8777822.

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

It is not an unprimeable number, because it can be changed into a prime (2287777) 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, 4250 + ... + 4757.

It is an arithmetic number, because the mean of its divisors is an integer number (432384).

2^2287778 is an apocalyptic number.

2287778 is a deficient number, since it is larger than the sum of its proper divisors (1171294).

2287778 is a wasteful number, since it uses less digits than its factorization.

2287778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9136.

The product of its digits is 87808, while the sum is 41.

The square root of 2287778 is about 1512.5402473984. The cubic root of 2287778 is about 131.7663835399.

The spelling of 2287778 in words is "two million, two hundred eighty-seven thousand, seven hundred seventy-eight".