11138878 has 8 divisors (see below), whose sum is σ = 16775640. Its totient is φ = 5547000.

The previous prime is 11138843. The next prime is 11138891. The reversal of 11138878 is 87883111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10593 + ... + 11596.

It is an arithmetic number, because the mean of its divisors is an integer number (2096955).

Almost surely, 2^11138878 is an apocalyptic number.

11138878 is a deficient number, since it is larger than the sum of its proper divisors (5636762).

11138878 is a wasteful number, since it uses less digits than its factorization.

11138878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22442.

The product of its digits is 10752, while the sum is 37.

The square root of 11138878 is about 3337.4957677876. The cubic root of 11138878 is about 223.3300427722.

The spelling of 11138878 in words is "eleven million, one hundred thirty-eight thousand, eight hundred seventy-eight".