11430820 has 12 divisors (see below), whose sum is σ = 24004764. Its totient is φ = 4572320.

The previous prime is 11430781. The next prime is 11430827. The reversal of 11430820 is 2803411.

It can be written as a sum of positive squares in 2 ways, for example, as 8444836 + 2985984 = 2906^2 + 1728^2 .

It is not an unprimeable number, because it can be changed into a prime (11430827) 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 3 ways as a sum of consecutive naturals, for example, 285751 + ... + 285790.

It is an arithmetic number, because the mean of its divisors is an integer number (2000397).

Almost surely, 2^11430820 is an apocalyptic number.

11430820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11430820 is an abundant number, since it is smaller than the sum of its proper divisors (12573944).

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

11430820 is a wasteful number, since it uses less digits than its factorization.

11430820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571550 (or 571548 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 11430820 is about 3380.9495707567. The cubic root of 11430820 is about 225.2643477380.

The spelling of 11430820 in words is "eleven million, four hundred thirty thousand, eight hundred twenty".