11442278 has 4 divisors (see below), whose sum is σ = 17163420. Its totient is φ = 5721138.

The previous prime is 11442271. The next prime is 11442307. The reversal of 11442278 is 87224411.

11442278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11442278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11442271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860568 + ... + 2860571.

It is an arithmetic number, because the mean of its divisors is an integer number (4290855).

Almost surely, 2^11442278 is an apocalyptic number.

11442278 is a deficient number, since it is larger than the sum of its proper divisors (5721142).

11442278 is an equidigital number, since it uses as much as digits as its factorization.

11442278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721141.

The product of its digits is 3584, while the sum is 29.

The square root of 11442278 is about 3382.6436407047. The cubic root of 11442278 is about 225.3395892626.

Adding to 11442278 its reverse (87224411), we get a palindrome (98666689).

The spelling of 11442278 in words is "eleven million, four hundred forty-two thousand, two hundred seventy-eight".