421448832 has 160 divisors (see below), whose sum is σ = 1433646720. Its totient is φ = 120393216.

The previous prime is 421448791. The next prime is 421448837. The reversal of 421448832 is 238844124.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (421448837) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69673 + ... + 75479.

It is an arithmetic number, because the mean of its divisors is an integer number (8960292).

Almost surely, 2^421448832 is an apocalyptic number.

421448832 is a gapful number since it is divisible by the number (42) 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 421448832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716823360).

421448832 is an abundant number, since it is smaller than the sum of its proper divisors (1012197888).

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

421448832 is an equidigital number, since it uses as much as digits as its factorization.

421448832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5840 (or 5819 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 421448832 is about 20529.2189817343. The cubic root of 421448832 is about 749.7473709143.

The spelling of 421448832 in words is "four hundred twenty-one million, four hundred forty-eight thousand, eight hundred thirty-two".