1123456730 has 64 divisors (see below), whose sum is σ = 2343624192. Its totient is φ = 383216640.

The previous prime is 1123456729. The next prime is 1123456751. The reversal of 1123456730 is 376543211.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685472 + ... + 687108.

It is an arithmetic number, because the mean of its divisors is an integer number (36619128).

Almost surely, 2^1123456730 is an apocalyptic number.

1123456730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123456730 is an abundant number, since it is smaller than the sum of its proper divisors (1220167462).

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

1123456730 is a wasteful number, since it uses less digits than its factorization.

1123456730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1123456730 is about 33518.0060564467. The cubic root of 1123456730 is about 1039.5661189389.

Adding to 1123456730 its reverse (376543211), we get a palindrome (1499999941).

The spelling of 1123456730 in words is "one billion, one hundred twenty-three million, four hundred fifty-six thousand, seven hundred thirty".