457221808 has 20 divisors (see below), whose sum is σ = 890072248. Its totient is φ = 227525760.

The previous prime is 457221797. The next prime is 457221823. The reversal of 457221808 is 808122754.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64341 + ... + 71092.

Almost surely, 2^457221808 is an apocalyptic number.

It is an amenable number.

457221808 is a deficient number, since it is larger than the sum of its proper divisors (432850440).

457221808 is a wasteful number, since it uses less digits than its factorization.

457221808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135652 (or 135646 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 457221808 is about 21382.7455673962. The cubic root of 457221808 is about 770.3870590151.

The spelling of 457221808 in words is "four hundred fifty-seven million, two hundred twenty-one thousand, eight hundred eight".