421984276 has 72 divisors (see below), whose sum is σ = 893760000. Its totient is φ = 173638080.

The previous prime is 421984273. The next prime is 421984301. The reversal of 421984276 is 672489124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421984273) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 1208950 + ... + 1209298.

Almost surely, 2^421984276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421984276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446880000).

421984276 is an abundant number, since it is smaller than the sum of its proper divisors (471775724).

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

421984276 is a wasteful number, since it uses less digits than its factorization.

421984276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 588 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 421984276 is about 20542.2558644371. The cubic root of 421984276 is about 750.0647505578.

The spelling of 421984276 in words is "four hundred twenty-one million, nine hundred eighty-four thousand, two hundred seventy-six".