11281730 has 32 divisors (see below), whose sum is σ = 21385728. Its totient is φ = 4276800.

The previous prime is 11281723. The next prime is 11281733. The reversal of 11281730 is 3718211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 11281696 and 11281705.

It is not an unprimeable number, because it can be changed into a prime (11281733) 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, 41495 + ... + 41765.

It is an arithmetic number, because the mean of its divisors is an integer number (668304).

Almost surely, 2^11281730 is an apocalyptic number.

11281730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11281730 is a deficient number, since it is larger than the sum of its proper divisors (10103998).

11281730 is a wasteful number, since it uses less digits than its factorization.

11281730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 11281730 is about 3358.8286648771. The cubic root of 11281730 is about 224.2806988054.

Adding to 11281730 its reverse (3718211), we get a palindrome (14999941).

The spelling of 11281730 in words is "eleven million, two hundred eighty-one thousand, seven hundred thirty".