1129802688 has 448 divisors, whose sum is σ = 4119920640. Its totient is φ = 296524800.

The previous prime is 1129802633. The next prime is 1129802689. The reversal of 1129802688 is 8862089211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×1129802688² = 2552908227624050688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129802689) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8624383 + ... + 8624513.

Almost surely, 2^1129802688 is an apocalyptic number.

1129802688 is a gapful number since it is divisible by the number (18) 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 1129802688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059960320).

1129802688 is an abundant number, since it is smaller than the sum of its proper divisors (2990117952).

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

1129802688 is a wasteful number, since it uses less digits than its factorization.

1129802688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 1129802688 is about 33612.5376608194. The cubic root of 1129802688 is about 1041.5198094947.

The spelling of 1129802688 in words is "one billion, one hundred twenty-nine million, eight hundred two thousand, six hundred eighty-eight".