11278775 has 12 divisors (see below), whose sum is σ = 14117400. Its totient is φ = 8938080.

The previous prime is 11278759. The next prime is 11278777. The reversal of 11278775 is 57787211.

It is not a de Polignac number, because 11278775 - 2⁴ = 11278759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11278777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 656 + ... + 4794.

It is an arithmetic number, because the mean of its divisors is an integer number (1176450).

Almost surely, 2^11278775 is an apocalyptic number.

11278775 is a deficient number, since it is larger than the sum of its proper divisors (2838625).

11278775 is a wasteful number, since it uses less digits than its factorization.

11278775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258 (or 4253 counting only the distinct ones).

The product of its digits is 27440, while the sum is 38.

The square root of 11278775 is about 3358.3887505767. The cubic root of 11278775 is about 224.2611153037.

It can be divided in two parts, 112 and 78775, that added together give a palindrome (78887).

The spelling of 11278775 in words is "eleven million, two hundred seventy-eight thousand, seven hundred seventy-five".