729967240 has 16 divisors (see below), whose sum is σ = 1642426380. Its totient is φ = 291986880.

The previous prime is 729967237. The next prime is 729967279. The reversal of 729967240 is 42769927.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 729324036 + 643204 = 27006^2 + 802^2 .

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, 9124551 + ... + 9124630.

Almost surely, 2^729967240 is an apocalyptic number.

It is an amenable number.

729967240 is an abundant number, since it is smaller than the sum of its proper divisors (912459140).

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

729967240 is a wasteful number, since it uses less digits than its factorization.

729967240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18249192 (or 18249188 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 729967240 is about 27017.9059144116. The cubic root of 729967240 is about 900.3978652411.

The spelling of 729967240 in words is "seven hundred twenty-nine million, nine hundred sixty-seven thousand, two hundred forty".