11711830 has 32 divisors (see below), whose sum is σ = 23696064. Its totient is φ = 4135296.

The previous prime is 11711797. The next prime is 11711839. The reversal of 11711830 is 3811711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11711839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1032 + ... + 4948.

It is an arithmetic number, because the mean of its divisors is an integer number (740502).

Almost surely, 2^11711830 is an apocalyptic number.

11711830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11711830 is an abundant number, since it is smaller than the sum of its proper divisors (11984234).

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

11711830 is a wasteful number, since it uses less digits than its factorization.

11711830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960.

The product of its (nonzero) digits is 168, while the sum is 22.

The square root of 11711830 is about 3422.2551044596. The cubic root of 11711830 is about 227.0953560581.

The spelling of 11711830 in words is "eleven million, seven hundred eleven thousand, eight hundred thirty".