2442778 has 16 divisors (see below), whose sum is σ = 4032000. Its totient is φ = 1102896.

The previous prime is 2442767. The next prime is 2442779. The reversal of 2442778 is 8772442.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2442779) 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, 223 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (252000).

2^2442778 is an apocalyptic number.

2442778 is a deficient number, since it is larger than the sum of its proper divisors (1589222).

2442778 is a wasteful number, since it uses less digits than its factorization.

2442778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061.

The product of its digits is 25088, while the sum is 34.

The square root of 2442778 is about 1562.9388983578. The cubic root of 2442778 is about 134.6773823559.

The spelling of 2442778 in words is "two million, four hundred forty-two thousand, seven hundred seventy-eight".