729896550 has 48 divisors (see below), whose sum is σ = 1868547072. Its totient is φ = 188359200.

The previous prime is 729896539. The next prime is 729896551. The reversal of 729896550 is 55698927.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 729896493 and 729896502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729896551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73834 + ... + 83133.

It is an arithmetic number, because the mean of its divisors is an integer number (38928064).

Almost surely, 2^729896550 is an apocalyptic number.

729896550 is an abundant number, since it is smaller than the sum of its proper divisors (1138650522).

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

729896550 is a wasteful number, since it uses less digits than its factorization.

729896550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157013 (or 157008 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The square root of 729896550 is about 27016.5976762434. The cubic root of 729896550 is about 900.3687994710.

The spelling of 729896550 in words is "seven hundred twenty-nine million, eight hundred ninety-six thousand, five hundred fifty".