427521224 has 16 divisors (see below), whose sum is σ = 863264220. Its totient is φ = 197317440.

The previous prime is 427521209. The next prime is 427521247. The reversal of 427521224 is 422125724.

It can be written as a sum of positive squares in 2 ways, for example, as 419512324 + 8008900 = 20482^2 + 2830^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2055287 + ... + 2055494.

Almost surely, 2^427521224 is an apocalyptic number.

It is an amenable number.

427521224 is an abundant number, since it is smaller than the sum of its proper divisors (435742996).

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

427521224 is a wasteful number, since it uses less digits than its factorization.

427521224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110800 (or 4110796 counting only the distinct ones).

The product of its digits is 8960, while the sum is 29.

The square root of 427521224 is about 20676.5863720296. The cubic root of 427521224 is about 753.3310937012.

Adding to 427521224 its reverse (422125724), we get a palindrome (849646948).

The spelling of 427521224 in words is "four hundred twenty-seven million, five hundred twenty-one thousand, two hundred twenty-four".