729450580 has 12 divisors (see below), whose sum is σ = 1531846260. Its totient is φ = 291780224.

The previous prime is 729450559. The next prime is 729450599. The reversal of 729450580 is 85054927.

It can be written as a sum of positive squares in 2 ways, for example, as 108743184 + 620707396 = 10428^2 + 24914^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18236245 + ... + 18236284.

It is an arithmetic number, because the mean of its divisors is an integer number (127653855).

Almost surely, 2^729450580 is an apocalyptic number.

It is an amenable number.

729450580 is an abundant number, since it is smaller than the sum of its proper divisors (802395680).

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

729450580 is a wasteful number, since it uses less digits than its factorization.

729450580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36472538 (or 36472536 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 729450580 is about 27008.3427851470. The cubic root of 729450580 is about 900.1853856792.

The spelling of 729450580 in words is "seven hundred twenty-nine million, four hundred fifty thousand, five hundred eighty".