629387880 has 128 divisors (see below), whose sum is σ = 2073617280. Its totient is φ = 151557120.

The previous prime is 629387873. The next prime is 629387881. The reversal of 629387880 is 88783926.

It is a super-2 number, since 2×629387880² = 792258206981788800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (629387881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205722 + ... + 208758.

It is an arithmetic number, because the mean of its divisors is an integer number (16200135).

Almost surely, 2^629387880 is an apocalyptic number.

629387880 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 629387880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036808640).

629387880 is an abundant number, since it is smaller than the sum of its proper divisors (1444229400).

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

629387880 is a wasteful number, since it uses less digits than its factorization.

629387880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219 (or 3215 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 629387880 is about 25087.6041103968. The cubic root of 629387880 is about 856.9841542682.

The spelling of 629387880 in words is "six hundred twenty-nine million, three hundred eighty-seven thousand, eight hundred eighty".