421632260 has 72 divisors (see below), whose sum is σ = 1036113624. Its totient is φ = 143700480.

The previous prime is 421632259. The next prime is 421632269. The reversal of 421632260 is 62236124.

It can be written as a sum of positive squares in 4 ways, for example, as 2119936 + 419512324 = 1456^2 + 20482^2 .

It is not an unprimeable number, because it can be changed into a prime (421632269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176192 + ... + 178568.

It is an arithmetic number, because the mean of its divisors is an integer number (14390467).

Almost surely, 2^421632260 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 421632260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518056812).

421632260 is an abundant number, since it is smaller than the sum of its proper divisors (614481364).

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

421632260 is a wasteful number, since it uses less digits than its factorization.

421632260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581 (or 2572 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 421632260 is about 20533.6859818202. The cubic root of 421632260 is about 749.8561264764.

Adding to 421632260 its reverse (62236124), we get a palindrome (483868384).

The spelling of 421632260 in words is "four hundred twenty-one million, six hundred thirty-two thousand, two hundred sixty".