1123402800 has 480 divisors, whose sum is σ = 4215730176. Its totient is φ = 253440000.

The previous prime is 1123402799. The next prime is 1123402801. The reversal of 1123402800 is 82043211.

It is an interprime number because it is at equal distance from previous prime (1123402799) and next prime (1123402801).

It is not an unprimeable number, because it can be changed into a prime (1123402801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11122750 + ... + 11122850.

Almost surely, 2^1123402800 is an apocalyptic number.

1123402800 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 1123402800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2107865088).

1123402800 is an abundant number, since it is smaller than the sum of its proper divisors (3092327376).

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

1123402800 is a wasteful number, since it uses less digits than its factorization.

1123402800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1123402800 is about 33517.2015538290. The cubic root of 1123402800 is about 1039.5494843573.

The spelling of 1123402800 in words is "one billion, one hundred twenty-three million, four hundred two thousand, eight hundred".