421654016 has 80 divisors (see below), whose sum is σ = 982898400. Its totient is φ = 180708864.

The previous prime is 421653983. The next prime is 421654039. The reversal of 421654016 is 610456124.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 421654016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60236285 + ... + 60236291.

It is an arithmetic number, because the mean of its divisors is an integer number (12286230).

Almost surely, 2^421654016 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 421654016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491449200).

421654016 is an abundant number, since it is smaller than the sum of its proper divisors (561244384).

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

421654016 is an frugal number, since it uses more digits than its factorization.

421654016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 9 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 421654016 is about 20534.2157386154. The cubic root of 421654016 is about 749.8690236468.

The spelling of 421654016 in words is "four hundred twenty-one million, six hundred fifty-four thousand, sixteen".