11923830 has 72 divisors (see below), whose sum is σ = 32808672. Its totient is φ = 3004128.

The previous prime is 11923829. The next prime is 11923831. The reversal of 11923830 is 3832911.

It is an interprime number because it is at equal distance from previous prime (11923829) and next prime (11923831).

It is a junction number, because it is equal to n+sod(n) for n = 11923794 and 11923803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11923831) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32307 + ... + 32673.

It is an arithmetic number, because the mean of its divisors is an integer number (455676).

Almost surely, 2^11923830 is an apocalyptic number.

11923830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11923830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16404336).

11923830 is an abundant number, since it is smaller than the sum of its proper divisors (20884842).

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

11923830 is a wasteful number, since it uses less digits than its factorization.

11923830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 11923830 is about 3453.0899206363. The cubic root of 11923830 is about 228.4574150507.

The spelling of 11923830 in words is "eleven million, nine hundred twenty-three thousand, eight hundred thirty".