29343997980 has 480 divisors, whose sum is σ = 104755875840. Its totient is φ = 6868540800.

The previous prime is 29343997957. The next prime is 29343997981. The reversal of 29343997980 is 8979934392.

29343997980 is a `hidden beast` number, since 29 + 3 + 439 + 97 + 98 + 0 = 666.

It is a super-2 number, since 2×29343997980² (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 (29343997981) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 66842601 + ... + 66843039.

It is an arithmetic number, because the mean of its divisors is an integer number (218241408).

Almost surely, 2^29343997980 is an apocalyptic number.

29343997980 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 29343997980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52377937920).

29343997980 is an abundant number, since it is smaller than the sum of its proper divisors (75411877860).

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

29343997980 is a wasteful number, since it uses less digits than its factorization.

29343997980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 29343997980 in words is "twenty-nine billion, three hundred forty-three million, nine hundred ninety-seven thousand, nine hundred eighty".