729988974 has 48 divisors (see below), whose sum is σ = 1858160304. Its totient is φ = 204192000.

The previous prime is 729988951. The next prime is 729988979. The reversal of 729988974 is 479889927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729988979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139227 + ... + 144374.

It is an arithmetic number, because the mean of its divisors is an integer number (38711673).

Almost surely, 2^729988974 is an apocalyptic number.

729988974 is an abundant number, since it is smaller than the sum of its proper divisors (1128171330).

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

729988974 is a wasteful number, since it uses less digits than its factorization.

729988974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283633 (or 283630 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 729988974 is about 27018.3081261577. The cubic root of 729988974 is about 900.4068012827.

The spelling of 729988974 in words is "seven hundred twenty-nine million, nine hundred eighty-eight thousand, nine hundred seventy-four".