29473066728 has 128 divisors (see below), whose sum is σ = 96583680000. Its totient is φ = 8149222080.

The previous prime is 29473066723. The next prime is 29473066739. The reversal of 29473066728 is 82766037492.

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

It is not an unprimeable number, because it can be changed into a prime (29473066723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267528 + ... + 361271.

It is an arithmetic number, because the mean of its divisors is an integer number (754560000).

Almost surely, 2^29473066728 is an apocalyptic number.

29473066728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

29473066728 is an abundant number, since it is smaller than the sum of its proper divisors (67110613272).

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

29473066728 is a wasteful number, since it uses less digits than its factorization.

29473066728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628852 (or 628842 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 29473066728 in words is "twenty-nine billion, four hundred seventy-three million, sixty-six thousand, seven hundred twenty-eight".