29023138140 has 96 divisors (see below), whose sum is σ = 87668723520. Its totient is φ = 7146786816.

The previous prime is 29023138117. The next prime is 29023138141. The reversal of 29023138140 is 4183132092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29023138141) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 214375 + ... + 322494.

It is an arithmetic number, because the mean of its divisors is an integer number (913215870).

Almost surely, 2^29023138140 is an apocalyptic number.

29023138140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29023138140 is an abundant number, since it is smaller than the sum of its proper divisors (58645585380).

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

29023138140 is a wasteful number, since it uses less digits than its factorization.

29023138140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536951 (or 536949 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 29023138140 in words is "twenty-nine billion, twenty-three million, one hundred thirty-eight thousand, one hundred forty".