29780212872 has 64 divisors (see below), whose sum is σ = 77799346560. Its totient is φ = 9481472000.

The previous prime is 29780212867. The next prime is 29780212909. The reversal of 29780212872 is 27821208792.

It is a super-2 number, since 2×29780212872² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 348472 + ... + 425432.

It is an arithmetic number, because the mean of its divisors is an integer number (1215614790).

Almost surely, 2^29780212872 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 29780212872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38899673280).

29780212872 is an abundant number, since it is smaller than the sum of its proper divisors (48019133688).

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

29780212872 is a wasteful number, since it uses less digits than its factorization.

29780212872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77694 (or 77690 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 29780212872 in words is "twenty-nine billion, seven hundred eighty million, two hundred twelve thousand, eight hundred seventy-two".