729361990 has 32 divisors (see below), whose sum is σ = 1505240640. Its totient is φ = 249260544.

The previous prime is 729361961. The next prime is 729362041. The reversal of 729361990 is 99163927.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 729361990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5266 + ... + 38554.

It is an arithmetic number, because the mean of its divisors is an integer number (47038770).

Almost surely, 2^729361990 is an apocalyptic number.

729361990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

729361990 is an abundant number, since it is smaller than the sum of its proper divisors (775878650).

729361990 is a wasteful number, since it uses less digits than its factorization.

729361990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33616.

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 729361990 is about 27006.7026865554. The cubic root of 729361990 is about 900.1489424281.

The spelling of 729361990 in words is "seven hundred twenty-nine million, three hundred sixty-one thousand, nine hundred ninety".