1123873256 has 64 divisors (see below), whose sum is σ = 2497996800. Its totient is φ = 468331200.

The previous prime is 1123873243. The next prime is 1123873297. The reversal of 1123873256 is 6523783211.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 15 ways as a sum of consecutive naturals, for example, 40991 + ... + 62673.

It is an arithmetic number, because the mean of its divisors is an integer number (39031200).

Almost surely, 2^1123873256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123873256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1248998400).

1123873256 is an abundant number, since it is smaller than the sum of its proper divisors (1374123544).

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

1123873256 is a wasteful number, since it uses less digits than its factorization.

1123873256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21750 (or 21746 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 1123873256 is about 33524.2189469046. The cubic root of 1123873256 is about 1039.6945774734.

The spelling of 1123873256 in words is "one billion, one hundred twenty-three million, eight hundred seventy-three thousand, two hundred fifty-six".