629408880 has 120 divisors (see below), whose sum is σ = 2192120112. Its totient is φ = 167837184.

The previous prime is 629408861. The next prime is 629408881. The reversal of 629408880 is 88804926.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629408881) 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, 3252 + ... + 35628.

Almost surely, 2^629408880 is an apocalyptic number.

629408880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 629408880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096060056).

629408880 is an abundant number, since it is smaller than the sum of its proper divisors (1562711232).

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

629408880 is a wasteful number, since it uses less digits than its factorization.

629408880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32405 (or 32387 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 629408880 is about 25088.0226402959. The cubic root of 629408880 is about 856.9936854692.

The spelling of 629408880 in words is "six hundred twenty-nine million, four hundred eight thousand, eight hundred eighty".