29838338140 has 24 divisors (see below), whose sum is σ = 67480549920. Its totient is φ = 11017232448.

The previous prime is 29838338129. The next prime is 29838338143. The reversal of 29838338140 is 4183383892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29838338143) 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, 57381160 + ... + 57381679.

It is an arithmetic number, because the mean of its divisors is an integer number (2811689580).

Almost surely, 2^29838338140 is an apocalyptic number.

29838338140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29838338140 is an abundant number, since it is smaller than the sum of its proper divisors (37642211780).

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

29838338140 is a wasteful number, since it uses less digits than its factorization.

29838338140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114762861 (or 114762859 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 29838338140 in words is "twenty-nine billion, eight hundred thirty-eight million, three hundred thirty-eight thousand, one hundred forty".