729698274 has 64 divisors (see below), whose sum is σ = 1680000000. Its totient is φ = 234524160.

The previous prime is 729698213. The next prime is 729698297. The reversal of 729698274 is 472896927.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 729698274.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 583602 + ... + 584850.

It is an arithmetic number, because the mean of its divisors is an integer number (26250000).

Almost surely, 2^729698274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 729698274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (840000000).

729698274 is an abundant number, since it is smaller than the sum of its proper divisors (950301726).

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

729698274 is a wasteful number, since it uses less digits than its factorization.

729698274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1634 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 729698274 is about 27012.9279049865. The cubic root of 729698274 is about 900.2872638563.

It can be divided in two parts, 7296 and 98274, that added together give a triangular number (105570 = T₄₅₉).

The spelling of 729698274 in words is "seven hundred twenty-nine million, six hundred ninety-eight thousand, two hundred seventy-four".