29770078728 has 48 divisors (see below), whose sum is σ = 80590608720. Its totient is φ = 9160022976.

The previous prime is 29770078669. The next prime is 29770078771. The reversal of 29770078728 is 82787007792.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3665826 + ... + 3673937.

It is an arithmetic number, because the mean of its divisors is an integer number (1678971015).

Almost surely, 2^29770078728 is an apocalyptic number.

It is an amenable number.

29770078728 is an abundant number, since it is smaller than the sum of its proper divisors (50820529992).

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

29770078728 is a wasteful number, since it uses less digits than its factorization.

29770078728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7339798 (or 7339781 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 57.

The spelling of 29770078728 in words is "twenty-nine billion, seven hundred seventy million, seventy-eight thousand, seven hundred twenty-eight".