421292928 has 256 divisors, whose sum is σ = 1376755200. Its totient is φ = 111476736.

The previous prime is 421292891. The next prime is 421292933. The reversal of 421292928 is 829292124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3728200 + ... + 3728312.

It is an arithmetic number, because the mean of its divisors is an integer number (5377950).

Almost surely, 2^421292928 is an apocalyptic number.

421292928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421292928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688377600).

421292928 is an abundant number, since it is smaller than the sum of its proper divisors (955462272).

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

421292928 is a wasteful number, since it uses less digits than its factorization.

421292928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 217 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 421292928 is about 20525.4215060252. The cubic root of 421292928 is about 749.6549096857.

The spelling of 421292928 in words is "four hundred twenty-one million, two hundred ninety-two thousand, nine hundred twenty-eight".