29812260920 has 64 divisors (see below), whose sum is σ = 72468587520. Its totient is φ = 10972376064.

The previous prime is 29812260893. The next prime is 29812260931. The reversal of 29812260920 is 2906221892.

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, 71177 + ... + 254343.

It is an arithmetic number, because the mean of its divisors is an integer number (1132321680).

Almost surely, 2^29812260920 is an apocalyptic number.

29812260920 is a gapful number since it is divisible by the number (20) 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 29812260920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36234293760).

29812260920 is an abundant number, since it is smaller than the sum of its proper divisors (42656326600).

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

29812260920 is a wasteful number, since it uses less digits than its factorization.

29812260920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183504 (or 183500 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 29812260920 in words is "twenty-nine billion, eight hundred twelve million, two hundred sixty thousand, nine hundred twenty".