408643628 has 6 divisors (see below), whose sum is σ = 715126356. Its totient is φ = 204321812.

The previous prime is 408643619. The next prime is 408643639. The reversal of 408643628 is 826346804.

It is a super-2 number, since 2×408643628² = 333979229410004768, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 51080450 + ... + 51080457.

It is an arithmetic number, because the mean of its divisors is an integer number (119187726).

Almost surely, 2^408643628 is an apocalyptic number.

It is an amenable number.

408643628 is a deficient number, since it is larger than the sum of its proper divisors (306482728).

408643628 is a wasteful number, since it uses less digits than its factorization.

408643628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102160911 (or 102160909 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 408643628 is about 20214.9357654186. The cubic root of 408643628 is about 742.0757569960.

The spelling of 408643628 in words is "four hundred eight million, six hundred forty-three thousand, six hundred twenty-eight".