427221344 has 48 divisors (see below), whose sum is σ = 921669840. Its totient is φ = 193320960.

The previous prime is 427221341. The next prime is 427221349. The reversal of 427221344 is 443122724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427221341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79412 + ... + 84620.

It is an arithmetic number, because the mean of its divisors is an integer number (19201455).

Almost surely, 2^427221344 is an apocalyptic number.

427221344 is a gapful number since it is divisible by the number (44) 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 427221344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460834920).

427221344 is an abundant number, since it is smaller than the sum of its proper divisors (494448496).

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

427221344 is a wasteful number, since it uses less digits than its factorization.

427221344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463 (or 5455 counting only the distinct ones).

The product of its digits is 10752, while the sum is 29.

The square root of 427221344 is about 20669.3334193437. Note that the first 3 decimals coincide. The cubic root of 427221344 is about 753.1549139338.

The spelling of 427221344 in words is "four hundred twenty-seven million, two hundred twenty-one thousand, three hundred forty-four".