11278857 has 8 divisors (see below), whose sum is σ = 15388384. Its totient is φ = 7344288.

The previous prime is 11278849. The next prime is 11278859. The reversal of 11278857 is 75887211.

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

It is not a de Polignac number, because 11278857 - 2³ = 11278849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11278859) 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, 43588 + ... + 43845.

It is an arithmetic number, because the mean of its divisors is an integer number (1923548).

Almost surely, 2^11278857 is an apocalyptic number.

It is an amenable number.

11278857 is a deficient number, since it is larger than the sum of its proper divisors (4109527).

11278857 is an equidigital number, since it uses as much as digits as its factorization.

11278857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87479.

The product of its digits is 31360, while the sum is 39.

The square root of 11278857 is about 3358.4009587898. The cubic root of 11278857 is about 224.2616587837.

The spelling of 11278857 in words is "eleven million, two hundred seventy-eight thousand, eight hundred fifty-seven".