11723830 has 16 divisors (see below), whose sum is σ = 21831120. Its totient is φ = 4527712.

The previous prime is 11723753. The next prime is 11723843. The reversal of 11723830 is 3832711.

11723830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11723795 and 11723804.

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, 19924 + ... + 20503.

It is an arithmetic number, because the mean of its divisors is an integer number (1364445).

Almost surely, 2^11723830 is an apocalyptic number.

11723830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11723830 is a deficient number, since it is larger than the sum of its proper divisors (10107290).

11723830 is a wasteful number, since it uses less digits than its factorization.

11723830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40463.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 11723830 is about 3424.0078855049. The cubic root of 11723830 is about 227.1728905985.

The spelling of 11723830 in words is "eleven million, seven hundred twenty-three thousand, eight hundred thirty".