421516800 has 180 divisors, whose sum is σ = 1508904540. Its totient is φ = 112373760.

The previous prime is 421516793. The next prime is 421516817. The reversal of 421516800 is 8615124.

It is a tau number, because it is divible by the number of its divisors (180).

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 113371 + ... + 117029.

It is an arithmetic number, because the mean of its divisors is an integer number (8382803).

Almost surely, 2^421516800 is an apocalyptic number.

421516800 is a gapful number since it is divisible by the number (40) 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 421516800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754452270).

421516800 is an abundant number, since it is smaller than the sum of its proper divisors (1087387740).

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

421516800 is a wasteful number, since it uses less digits than its factorization.

421516800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693 (or 3669 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 421516800 is about 20530.8743116313. The cubic root of 421516800 is about 749.7876732288.

The spelling of 421516800 in words is "four hundred twenty-one million, five hundred sixteen thousand, eight hundred".