1123688032 has 96 divisors (see below), whose sum is σ = 2429844480. Its totient is φ = 509429760.

The previous prime is 1123688029. The next prime is 1123688047. The reversal of 1123688032 is 2308863211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1815019 + ... + 1815637.

It is an arithmetic number, because the mean of its divisors is an integer number (25310880).

Almost surely, 2^1123688032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123688032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1214922240).

1123688032 is an abundant number, since it is smaller than the sum of its proper divisors (1306156448).

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

1123688032 is a wasteful number, since it uses less digits than its factorization.

1123688032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1123688032 is about 33521.4562929477. The cubic root of 1123688032 is about 1039.6374574593.

The spelling of 1123688032 in words is "one billion, one hundred twenty-three million, six hundred eighty-eight thousand, thirty-two".