11163890 has 32 divisors (see below), whose sum is σ = 20923056. Its totient is φ = 4285440.

The previous prime is 11163877. The next prime is 11163907. The reversal of 11163890 is 9836111.

It is a happy number.

11163890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2455489 + 8708401 = 1567^2 + 2951^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29744 + ... + 30116.

Almost surely, 2^11163890 is an apocalyptic number.

11163890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11163890 is a deficient number, since it is larger than the sum of its proper divisors (9759166).

11163890 is a wasteful number, since it uses less digits than its factorization.

11163890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 11163890 is about 3341.2407874920. The cubic root of 11163890 is about 223.4970780047.

The spelling of 11163890 in words is "eleven million, one hundred sixty-three thousand, eight hundred ninety".