2278424 has 8 divisors (see below), whose sum is σ = 4272060. Its totient is φ = 1139208.

The previous prime is 2278421. The next prime is 2278429. The reversal of 2278424 is 4248722.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278421) 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 as a sum of consecutive naturals, namely, 142394 + ... + 142409.

2^2278424 is an apocalyptic number.

It is an amenable number.

2278424 is a deficient number, since it is larger than the sum of its proper divisors (1993636).

2278424 is a wasteful number, since it uses less digits than its factorization.

2278424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284809 (or 284805 counting only the distinct ones).

The product of its digits is 7168, while the sum is 29.

The square root of 2278424 is about 1509.4449310922. Note that the first 3 decimals coincide. The cubic root of 2278424 is about 131.5865545525.

The spelling of 2278424 in words is "two million, two hundred seventy-eight thousand, four hundred twenty-four".