729820452 has 24 divisors (see below), whose sum is σ = 1776954816. Its totient is φ = 232696288.

The previous prime is 729820439. The next prime is 729820471. The reversal of 729820452 is 254028927.

It is a self number, because there is not a number n which added to its sum of digits gives 729820452.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321863 + ... + 1322414.

It is an arithmetic number, because the mean of its divisors is an integer number (74039784).

Almost surely, 2^729820452 is an apocalyptic number.

It is an amenable number.

729820452 is an abundant number, since it is smaller than the sum of its proper divisors (1047134364).

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

729820452 is a wasteful number, since it uses less digits than its factorization.

729820452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644307 (or 2644305 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 729820452 is about 27015.1892830681. The cubic root of 729820452 is about 900.3375079836.

The spelling of 729820452 in words is "seven hundred twenty-nine million, eight hundred twenty thousand, four hundred fifty-two".