11278943 has 8 divisors (see below), whose sum is σ = 12429648. Its totient is φ = 10168704.

The previous prime is 11278933. The next prime is 11278979. The reversal of 11278943 is 34987211.

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

It is not a de Polignac number, because 11278943 - 2⁶ = 11278879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11278903) 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 7 ways as a sum of consecutive naturals, for example, 9530 + ... + 10647.

It is an arithmetic number, because the mean of its divisors is an integer number (1553706).

Almost surely, 2^11278943 is an apocalyptic number.

11278943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11278943 is a deficient number, since it is larger than the sum of its proper divisors (1150705).

11278943 is a wasteful number, since it uses less digits than its factorization.

11278943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20233.

The product of its digits is 12096, while the sum is 35.

The square root of 11278943 is about 3358.4137624778. The cubic root of 11278943 is about 224.2622287721.

It can be divided in two parts, 11278 and 943, that added together give a palindrome (12221).

The spelling of 11278943 in words is "eleven million, two hundred seventy-eight thousand, nine hundred forty-three".