29388721450 has 24 divisors (see below), whose sum is σ = 59632388640. Its totient is φ = 10686807600.

The previous prime is 29388721433. The next prime is 29388721469. The reversal of 29388721450 is 5412788392.

It is a junction number, because it is equal to n+sod(n) for n = 29388721394 and 29388721403.

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, 26716470 + ... + 26717569.

It is an arithmetic number, because the mean of its divisors is an integer number (2484682860).

Almost surely, 2^29388721450 is an apocalyptic number.

29388721450 is an abundant number, since it is smaller than the sum of its proper divisors (30243667190).

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

29388721450 is a wasteful number, since it uses less digits than its factorization.

29388721450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53434062 (or 53434057 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 29388721450 in words is "twenty-nine billion, three hundred eighty-eight million, seven hundred twenty-one thousand, four hundred fifty".