1123063872 has 224 divisors, whose sum is σ = 3623657472. Its totient is φ = 300005376.

The previous prime is 1123063867. The next prime is 1123063897. The reversal of 1123063872 is 2783603211.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×1123063872² = 2522544921183264768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1452478 + ... + 1453250.

Almost surely, 2^1123063872 is an apocalyptic number.

1123063872 is a gapful number since it is divisible by the number (12) 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 1123063872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811828736).

1123063872 is an abundant number, since it is smaller than the sum of its proper divisors (2500593600).

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

1123063872 is a wasteful number, since it uses less digits than its factorization.

1123063872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1123063872 is about 33512.1451417244. The cubic root of 1123063872 is about 1039.4449306252. Note that the first 3 decimals are identical.

The spelling of 1123063872 in words is "one billion, one hundred twenty-three million, sixty-three thousand, eight hundred seventy-two".