11899238 has 16 divisors (see below), whose sum is σ = 19550160. Its totient is φ = 5398176.

The previous prime is 11899213. The next prime is 11899243. The reversal of 11899238 is 83299811.

Added to its reverse (83299811) it gives a square (95199049 = 9757²).

11899238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11899195 and 11899204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2345 + ... + 5412.

It is an arithmetic number, because the mean of its divisors is an integer number (1221885).

Almost surely, 2^11899238 is an apocalyptic number.

11899238 is a deficient number, since it is larger than the sum of its proper divisors (7650922).

11899238 is a wasteful number, since it uses less digits than its factorization.

11899238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7831.

The product of its digits is 31104, while the sum is 41.

The square root of 11899238 is about 3449.5272139816. The cubic root of 11899238 is about 228.3002482239.

Adding to 11899238 its reverse (83299811), we get a square (95199049 = 9757²).

It can be divided in two parts, 118 and 99238, that multiplied together give a square (11710084 = 3422²).

The spelling of 11899238 in words is "eleven million, eight hundred ninety-nine thousand, two hundred thirty-eight".