629734728 has 64 divisors (see below), whose sum is σ = 1804124160. Its totient is φ = 179436096.

The previous prime is 629734691. The next prime is 629734751. The reversal of 629734728 is 827437926.

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, 59451 + ... + 69237.

It is an arithmetic number, because the mean of its divisors is an integer number (28189440).

Almost surely, 2^629734728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 629734728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (902062080).

629734728 is an abundant number, since it is smaller than the sum of its proper divisors (1174389432).

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

629734728 is a wasteful number, since it uses less digits than its factorization.

629734728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10186 (or 10182 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 629734728 is about 25094.5158949122. The cubic root of 629734728 is about 857.1415498710.

The spelling of 629734728 in words is "six hundred twenty-nine million, seven hundred thirty-four thousand, seven hundred twenty-eight".