1123487904 has 288 divisors, whose sum is σ = 3806345088. Its totient is φ = 283852800.

The previous prime is 1123487881. The next prime is 1123487921. The reversal of 1123487904 is 4097843211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3333624 + ... + 3333960.

It is an arithmetic number, because the mean of its divisors is an integer number (13216476).

Almost surely, 2^1123487904 is an apocalyptic number.

1123487904 is a gapful number since it is divisible by the number (14) 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 1123487904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1903172544).

1123487904 is an abundant number, since it is smaller than the sum of its proper divisors (2682857184).

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

1123487904 is a wasteful number, since it uses less digits than its factorization.

1123487904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1123487904 is about 33518.4710868500. The cubic root of 1123487904 is about 1039.5757342431.

The spelling of 1123487904 in words is "one billion, one hundred twenty-three million, four hundred eighty-seven thousand, nine hundred four".