1123678080 has 576 divisors, whose sum is σ = 4740184800. Its totient is φ = 239984640.

The previous prime is 1123678063. The next prime is 1123678081. The reversal of 1123678080 is 808763211.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123678081) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 36247665 + ... + 36247695.

Almost surely, 2^1123678080 is an apocalyptic number.

1123678080 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 1123678080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2370092400).

1123678080 is an abundant number, since it is smaller than the sum of its proper divisors (3616506720).

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

1123678080 is a wasteful number, since it uses less digits than its factorization.

1123678080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1123678080 is about 33521.3078503808. The cubic root of 1123678080 is about 1039.6343882496.

The spelling of 1123678080 in words is "one billion, one hundred twenty-three million, six hundred seventy-eight thousand, eighty".