729155990 has 16 divisors (see below), whose sum is σ = 1357739280. Its totient is φ = 281604960.

The previous prime is 729155969. The next prime is 729156023. The reversal of 729155990 is 99551927.

729155990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256876 + ... + 1257455.

It is an arithmetic number, because the mean of its divisors is an integer number (84858705).

Almost surely, 2^729155990 is an apocalyptic number.

729155990 is a deficient number, since it is larger than the sum of its proper divisors (628583290).

729155990 is a wasteful number, since it uses less digits than its factorization.

729155990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514367.

The product of its (nonzero) digits is 255150, while the sum is 47.

The square root of 729155990 is about 27002.8885491904. Note that the first 3 decimals coincide. The cubic root of 729155990 is about 900.0641888375.

The spelling of 729155990 in words is "seven hundred twenty-nine million, one hundred fifty-five thousand, nine hundred ninety".