1123864000 has 336 divisors, whose sum is σ = 3360749184. Its totient is φ = 370944000.

The previous prime is 1123863991. The next prime is 1123864009. The reversal of 1123864000 is 4683211.

It is an interprime number because it is at equal distance from previous prime (1123863991) and next prime (1123864009).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123864009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18423970 + ... + 18424030.

Almost surely, 2^1123864000 is an apocalyptic number.

1123864000 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 1123864000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680374592).

1123864000 is an abundant number, since it is smaller than the sum of its proper divisors (2236885184).

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

1123864000 is an equidigital number, since it uses as much as digits as its factorization.

1123864000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1123864000 is about 33524.0808971700. The cubic root of 1123864000 is about 1039.6917232253.

The spelling of 1123864000 in words is "one billion, one hundred twenty-three million, eight hundred sixty-four thousand".