729224290 has 8 divisors (see below), whose sum is σ = 1312603740. Its totient is φ = 291689712.

The previous prime is 729224267. The next prime is 729224291. The reversal of 729224290 is 92422927.

729224290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 681157801 + 48066489 = 26099^2 + 6933^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×729224290³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (729224291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36461205 + ... + 36461224.

Almost surely, 2^729224290 is an apocalyptic number.

729224290 is a deficient number, since it is larger than the sum of its proper divisors (583379450).

729224290 is a wasteful number, since it uses less digits than its factorization.

729224290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72922436.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 729224290 is about 27004.1531990914. The cubic root of 729224290 is about 900.0922909472.

The spelling of 729224290 in words is "seven hundred twenty-nine million, two hundred twenty-four thousand, two hundred ninety".