1123656000 has 112 divisors (see below), whose sum is σ = 3710391360. Its totient is φ = 299635200.

The previous prime is 1123655983. The next prime is 1123656013. The reversal of 1123656000 is 6563211.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 591 + ... + 47409.

Almost surely, 2^1123656000 is an apocalyptic number.

1123656000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123656000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1855195680).

1123656000 is an abundant number, since it is smaller than the sum of its proper divisors (2586735360).

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

1123656000 is an equidigital number, since it uses as much as digits as its factorization.

1123656000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46849 (or 46829 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1123656000 is about 33520.9785060043. The cubic root of 1123656000 is about 1039.6275786844.

The spelling of 1123656000 in words is "one billion, one hundred twenty-three million, six hundred fifty-six thousand".