1129217572 has 48 divisors (see below), whose sum is σ = 2336664960. Its totient is φ = 467424000.

The previous prime is 1129217569. The next prime is 1129217581. The reversal of 1129217572 is 2757129211.

It is a happy 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, 111079 + ... + 120817.

It is an arithmetic number, because the mean of its divisors is an integer number (48680520).

Almost surely, 2^1129217572 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 1129217572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168332480).

1129217572 is an abundant number, since it is smaller than the sum of its proper divisors (1207447388).

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

1129217572 is a wasteful number, since it uses less digits than its factorization.

1129217572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9892 (or 9890 counting only the distinct ones).

The product of its digits is 17640, while the sum is 37.

The square root of 1129217572 is about 33603.8326980718. The cubic root of 1129217572 is about 1041.3399801184.

The spelling of 1129217572 in words is "one billion, one hundred twenty-nine million, two hundred seventeen thousand, five hundred seventy-two".