11890023 has 8 divisors (see below), whose sum is σ = 16010736. Its totient is φ = 7848000.

The previous prime is 11890009. The next prime is 11890027. The reversal of 11890023 is 32009811.

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

It is not a de Polignac number, because 11890023 - 2⁴ = 11890007 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 11889975 and 11890002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11890027) 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, 19318 + ... + 19923.

It is an arithmetic number, because the mean of its divisors is an integer number (2001342).

Almost surely, 2^11890023 is an apocalyptic number.

11890023 is a deficient number, since it is larger than the sum of its proper divisors (4120713).

11890023 is a wasteful number, since it uses less digits than its factorization.

11890023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39345.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 11890023 is about 3448.1912649968. The cubic root of 11890023 is about 228.2412996287.

Adding to 11890023 its reverse (32009811), we get a palindrome (43899834).

The spelling of 11890023 in words is "eleven million, eight hundred ninety thousand, twenty-three".