2240778 has 8 divisors (see below), whose sum is σ = 4481568. Its totient is φ = 746924.

The previous prime is 2240759. The next prime is 2240779. The reversal of 2240778 is 8770422.

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

2240778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2240779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186726 + ... + 186737.

It is an arithmetic number, because the mean of its divisors is an integer number (560196).

2^2240778 is an apocalyptic number.

2240778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2240778 is a wasteful number, since it uses less digits than its factorization.

2240778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373468.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 2240778 is about 1496.9228437030. The cubic root of 2240778 is about 130.8577988064.

The spelling of 2240778 in words is "two million, two hundred forty thousand, seven hundred seventy-eight".