629820428 has 12 divisors (see below), whose sum is σ = 1137740352. Its totient is φ = 304751760.

The previous prime is 629820413. The next prime is 629820439. The reversal of 629820428 is 824028926.

It is a super-2 number, since 2×629820428² = 793347543052206368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2539475 + ... + 2539722.

It is an arithmetic number, because the mean of its divisors is an integer number (94811696).

Almost surely, 2^629820428 is an apocalyptic number.

It is an amenable number.

629820428 is a deficient number, since it is larger than the sum of its proper divisors (507919924).

629820428 is a wasteful number, since it uses less digits than its factorization.

629820428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079232 (or 5079230 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 629820428 is about 25096.2233812181. The cubic root of 629820428 is about 857.1804306333.

The spelling of 629820428 in words is "six hundred twenty-nine million, eight hundred twenty thousand, four hundred twenty-eight".