20120224 has 12 divisors (see below), whose sum is σ = 39611754. Its totient is φ = 10060096.

The previous prime is 20120213. The next prime is 20120237. The reversal of 20120224 is 42202102.

It can be written as a sum of positive squares in only one way, i.e., 18215824 + 1904400 = 4268^2 + 1380^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314347 + ... + 314410.

Almost surely, 2^20120224 is an apocalyptic number.

It is an amenable number.

20120224 is a deficient number, since it is larger than the sum of its proper divisors (19491530).

20120224 is an equidigital number, since it uses as much as digits as its factorization.

20120224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628767 (or 628759 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20120224 is about 4485.5572674975. The cubic root of 20120224 is about 271.9845723660.

Adding to 20120224 its reverse (42202102), we get a palindrome (62322326).

The spelling of 20120224 in words is "twenty million, one hundred twenty thousand, two hundred twenty-four".