421826672 has 20 divisors (see below), whose sum is σ = 843654336. Its totient is φ = 204109440.

The previous prime is 421826659. The next prime is 421826687. The reversal of 421826672 is 276628124.

421826672 is an admirable number.

It is a congruent number.

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, 424733 + ... + 425724.

Almost surely, 2^421826672 is an apocalyptic number.

It is an amenable number.

421826672 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

421826672 is a wasteful number, since it uses less digits than its factorization.

421826672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850496 (or 850490 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 421826672 is about 20538.4194133823. The cubic root of 421826672 is about 749.9713600915.

The spelling of 421826672 in words is "four hundred twenty-one million, eight hundred twenty-six thousand, six hundred seventy-two".