29952172888 has 72 divisors (see below), whose sum is σ = 64726695540. Its totient is φ = 12884781600.

The previous prime is 29952172879. The next prime is 29952172889. The reversal of 29952172888 is 88827125992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29952172889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 30846243 + ... + 30847213.

Almost surely, 2^29952172888 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 29952172888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32363347770).

29952172888 is an abundant number, since it is smaller than the sum of its proper divisors (34774522652).

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

29952172888 is an equidigital number, since it uses as much as digits as its factorization.

29952172888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997 (or 1003 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 61.

The spelling of 29952172888 in words is "twenty-nine billion, nine hundred fifty-two million, one hundred seventy-two thousand, eight hundred eighty-eight".