421562328 has 256 divisors, whose sum is σ = 1306368000. Its totient is φ = 111820800.

The previous prime is 421562303. The next prime is 421562347. The reversal of 421562328 is 823265124.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5336193 + ... + 5336271.

It is an arithmetic number, because the mean of its divisors is an integer number (5103000).

Almost surely, 2^421562328 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 421562328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653184000).

421562328 is an abundant number, since it is smaller than the sum of its proper divisors (884805672).

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

421562328 is a wasteful number, since it uses less digits than its factorization.

421562328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 182 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 421562328 is about 20531.9830508405. The cubic root of 421562328 is about 749.8146670949.

The spelling of 421562328 in words is "four hundred twenty-one million, five hundred sixty-two thousand, three hundred twenty-eight".