11817834 has 32 divisors (see below), whose sum is σ = 27527040. Its totient is φ = 3312192.

The previous prime is 11817823. The next prime is 11817853. The reversal of 11817834 is 43871811.

11817834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11817834² = 279322400903112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11817795 and 11817804.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429 + ... + 4880.

It is an arithmetic number, because the mean of its divisors is an integer number (860220).

Almost surely, 2^11817834 is an apocalyptic number.

11817834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11817834 is an abundant number, since it is smaller than the sum of its proper divisors (15709206).

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

11817834 is a wasteful number, since it uses less digits than its factorization.

11817834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374.

The product of its digits is 5376, while the sum is 33.

The square root of 11817834 is about 3437.7076664545. The cubic root of 11817834 is about 227.7784474477.

The spelling of 11817834 in words is "eleven million, eight hundred seventeen thousand, eight hundred thirty-four".