29729970270 has 640 divisors, whose sum is σ = 110344937472. Its totient is φ = 5542732800.

The previous prime is 29729970253. The next prime is 29729970271. The reversal of 29729970270 is 7207992792.

It is a super-2 number, since 2×29729970270² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29729970271) by changing a digit.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 29999475 + ... + 30000465.

Almost surely, 2^29729970270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29729970270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55172468736).

29729970270 is an abundant number, since it is smaller than the sum of its proper divisors (80614967202).

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

29729970270 is a wasteful number, since it uses less digits than its factorization.

29729970270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 54.

It can be divided in two parts, 29729 and 970270, that added together give a palindrome (999999).

The spelling of 29729970270 in words is "twenty-nine billion, seven hundred twenty-nine million, nine hundred seventy thousand, two hundred seventy".