11543830 has 16 divisors (see below), whose sum is σ = 21872880. Its totient is φ = 4374432.

The previous prime is 11543821. The next prime is 11543839. The reversal of 11543830 is 3834511.

It is an interprime number because it is at equal distance from previous prime (11543821) and next prime (11543839).

It is a super-2 number, since 2×11543830² = 266520022137800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11543795 and 11543804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543839) 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, 30189 + ... + 30568.

It is an arithmetic number, because the mean of its divisors is an integer number (1367055).

Almost surely, 2^11543830 is an apocalyptic number.

11543830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11543830 is a deficient number, since it is larger than the sum of its proper divisors (10329050).

11543830 is a wasteful number, since it uses less digits than its factorization.

11543830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60783.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 11543830 is about 3397.6212266820. The cubic root of 11543830 is about 226.0042680688.

The spelling of 11543830 in words is "eleven million, five hundred forty-three thousand, eight hundred thirty".