629782380 has 72 divisors (see below), whose sum is σ = 1927926000. Its totient is φ = 166396032.

The previous prime is 629782367. The next prime is 629782381. The reversal of 629782380 is 83287926.

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

It is not an unprimeable number, because it can be changed into a prime (629782381) 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, 3571 + ... + 35669.

It is an arithmetic number, because the mean of its divisors is an integer number (26776750).

Almost surely, 2^629782380 is an apocalyptic number.

629782380 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 629782380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (963963000).

629782380 is an abundant number, since it is smaller than the sum of its proper divisors (1298143620).

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

629782380 is a wasteful number, since it uses less digits than its factorization.

629782380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32223 (or 32218 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 629782380 is about 25095.4653274252. The cubic root of 629782380 is about 857.1631692806.

The spelling of 629782380 in words is "six hundred twenty-nine million, seven hundred eighty-two thousand, three hundred eighty".