11809930 has 32 divisors (see below), whose sum is σ = 23442048. Its totient is φ = 4248000.

The previous prime is 11809913. The next prime is 11809933. The reversal of 11809930 is 3990811.

It is a junction number, because it is equal to n+sod(n) for n = 11809892 and 11809901.

It is not an unprimeable number, because it can be changed into a prime (11809933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10579 + ... + 11641.

It is an arithmetic number, because the mean of its divisors is an integer number (732564).

Almost surely, 2^11809930 is an apocalyptic number.

11809930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11809930 is a deficient number, since it is larger than the sum of its proper divisors (11632118).

11809930 is a wasteful number, since it uses less digits than its factorization.

11809930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 11809930 is about 3436.5578708935. The cubic root of 11809930 is about 227.7276552194.

The spelling of 11809930 in words is "eleven million, eight hundred nine thousand, nine hundred thirty".