729148040 has 16 divisors (see below), whose sum is σ = 1640583180. Its totient is φ = 291659200.

The previous prime is 729148031. The next prime is 729148051. The reversal of 729148040 is 40841927.

It can be written as a sum of positive squares in 2 ways, for example, as 728892004 + 256036 = 26998^2 + 506^2 .

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, 9114311 + ... + 9114390.

Almost surely, 2^729148040 is an apocalyptic number.

It is an amenable number.

729148040 is an abundant number, since it is smaller than the sum of its proper divisors (911435140).

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

729148040 is a wasteful number, since it uses less digits than its factorization.

729148040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18228712 (or 18228708 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 729148040 is about 27002.7413423156. The cubic root of 729148040 is about 900.0609176873.

Adding to 729148040 its reverse (40841927), we get a palindrome (769989967).

The spelling of 729148040 in words is "seven hundred twenty-nine million, one hundred forty-eight thousand, forty".