729881450 has 24 divisors (see below), whose sum is σ = 1365180480. Its totient is φ = 290318000.

The previous prime is 729881443. The next prime is 729881461. The reversal of 729881450 is 54188927.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31826 + ... + 49725.

It is an arithmetic number, because the mean of its divisors is an integer number (56882520).

Almost surely, 2^729881450 is an apocalyptic number.

729881450 is a deficient number, since it is larger than the sum of its proper divisors (635299030).

729881450 is a wasteful number, since it uses less digits than its factorization.

729881450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81742 (or 81737 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 729881450 is about 27016.3182169592. The cubic root of 729881450 is about 900.3625905260.

The spelling of 729881450 in words is "seven hundred twenty-nine million, eight hundred eighty-one thousand, four hundred fifty".