11157808 has 40 divisors (see below), whose sum is σ = 22654800. Its totient is φ = 5316864.

The previous prime is 11157803. The next prime is 11157823. The reversal of 11157808 is 80875111.

It is a self number, because there is not a number n which added to its sum of digits gives 11157808.

It is not an unprimeable number, because it can be changed into a prime (11157803) 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, 64410 + ... + 64582.

It is an arithmetic number, because the mean of its divisors is an integer number (566370).

Almost surely, 2^11157808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11157808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11327400).

11157808 is an abundant number, since it is smaller than the sum of its proper divisors (11496992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11157808 is a wasteful number, since it uses less digits than its factorization.

11157808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 31.

The square root of 11157808 is about 3340.3305225681. The cubic root of 11157808 is about 223.4564841451.

The spelling of 11157808 in words is "eleven million, one hundred fifty-seven thousand, eight hundred eight".