29123703040 has 72 divisors (see below), whose sum is σ = 69887323800. Its totient is φ = 11628281856.

The previous prime is 29123703031. The next prime is 29123703041. The reversal of 29123703040 is 4030732192.

It can be written as a sum of positive squares in 4 ways, for example, as 840536064 + 28283166976 = 28992^2 + 168176^2 .

It is a junction number, because it is equal to n+sod(n) for n = 29123702993 and 29123703011.

It is not an unprimeable number, because it can be changed into a prime (29123703041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692536 + ... + 733384.

It is an arithmetic number, because the mean of its divisors is an integer number (970657275).

Almost surely, 2^29123703040 is an apocalyptic number.

29123703040 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 29123703040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34943661900).

29123703040 is an abundant number, since it is smaller than the sum of its proper divisors (40763620760).

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

29123703040 is an equidigital number, since it uses as much as digits as its factorization.

29123703040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41427 (or 41413 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 29123703040 in words is "twenty-nine billion, one hundred twenty-three million, seven hundred three thousand, forty".