11930820 has 48 divisors (see below), whose sum is σ = 36445248. Its totient is φ = 2892160.

The previous prime is 11930801. The next prime is 11930839. The reversal of 11930820 is 2803911.

It is an interprime number because it is at equal distance from previous prime (11930801) and next prime (11930839).

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, 8379 + ... + 9698.

It is an arithmetic number, because the mean of its divisors is an integer number (759276).

Almost surely, 2^11930820 is an apocalyptic number.

11930820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11930820 is an abundant number, since it is smaller than the sum of its proper divisors (24514428).

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

11930820 is a wasteful number, since it uses less digits than its factorization.

11930820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18100 (or 18098 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 11930820 is about 3454.1019093246. The cubic root of 11930820 is about 228.5020485111.

The spelling of 11930820 in words is "eleven million, nine hundred thirty thousand, eight hundred twenty".