629538816 has 72 divisors (see below), whose sum is σ = 1679812344. Its totient is φ = 209715200.

The previous prime is 629538809. The next prime is 629538829. The reversal of 629538816 is 618835926.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392416 + ... + 394016.

It is an arithmetic number, because the mean of its divisors is an integer number (23330727).

Almost surely, 2^629538816 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 629538816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839906172).

629538816 is an abundant number, since it is smaller than the sum of its proper divisors (1050273528).

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

629538816 is an frugal number, since it uses more digits than its factorization.

629538816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 1606 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 629538816 is about 25090.6121089144. The cubic root of 629538816 is about 857.0526543807.

The spelling of 629538816 in words is "six hundred twenty-nine million, five hundred thirty-eight thousand, eight hundred sixteen".