29312921088 has 160 divisors (see below), whose sum is σ = 94656798720. Its totient is φ = 8882657280.

The previous prime is 29312921087. The next prime is 29312921093. The reversal of 29312921088 is 88012921392.

It is a happy number.

It is a super-2 number, since 2×29312921088² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29312921083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55681 + ... + 248447.

It is an arithmetic number, because the mean of its divisors is an integer number (591604992).

Almost surely, 2^29312921088 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 29312921088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47328399360).

29312921088 is an abundant number, since it is smaller than the sum of its proper divisors (65343877632).

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

29312921088 is a wasteful number, since it uses less digits than its factorization.

29312921088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192805 (or 192783 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 29312921088 in words is "twenty-nine billion, three hundred twelve million, nine hundred twenty-one thousand, eighty-eight".