11890090 has 16 divisors (see below), whose sum is σ = 21441672. Its totient is φ = 4747264.

The previous prime is 11890079. The next prime is 11890091. The reversal of 11890090 is 9009811.

It can be written as a sum of positive squares in 4 ways, for example, as 10962721 + 927369 = 3311^2 + 963^2 .

It is not an unprimeable number, because it can be changed into a prime (11890091) 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, 9162 + ... + 10378.

Almost surely, 2^11890090 is an apocalyptic number.

11890090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11890090 is a deficient number, since it is larger than the sum of its proper divisors (9551582).

11890090 is a wasteful number, since it uses less digits than its factorization.

11890090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 11890090 is about 3448.2009802214. The cubic root of 11890090 is about 228.2417283394.

The spelling of 11890090 in words is "eleven million, eight hundred ninety thousand, ninety".