629392128 has 72 divisors (see below), whose sum is σ = 1681418928. Its totient is φ = 209006592.

The previous prime is 629392031. The next prime is 629392129. The reversal of 629392128 is 821293926.

It is a super-2 number, since 2×629392128² = 792268901576736768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 629392128.

It is not an unprimeable number, because it can be changed into a prime (629392129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223626 + ... + 226422.

Almost surely, 2^629392128 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 629392128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (840709464).

629392128 is an abundant number, since it is smaller than the sum of its proper divisors (1052026800).

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

629392128 is a wasteful number, since it uses less digits than its factorization.

629392128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109 (or 3095 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 629392128 is about 25087.6887735798. The cubic root of 629392128 is about 856.9860823111.

The spelling of 629392128 in words is "six hundred twenty-nine million, three hundred ninety-two thousand, one hundred twenty-eight".