421564336 has 20 divisors (see below), whose sum is σ = 818264592. Its totient is φ = 210399296.

The previous prime is 421564327. The next prime is 421564369. The reversal of 421564336 is 633465124.

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, 14740 + ... + 32563.

Almost surely, 2^421564336 is an apocalyptic number.

It is an amenable number.

421564336 is a deficient number, since it is larger than the sum of its proper divisors (396700256).

421564336 is a wasteful number, since it uses less digits than its factorization.

421564336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47868 (or 47862 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 421564336 is about 20532.0319501018. The cubic root of 421564336 is about 749.8158576073.

The spelling of 421564336 in words is "four hundred twenty-one million, five hundred sixty-four thousand, three hundred thirty-six".