20301224 has 8 divisors (see below), whose sum is σ = 38064810. Its totient is φ = 10150608.

The previous prime is 20301221. The next prime is 20301257. The reversal of 20301224 is 42210302.

It can be written as a sum of positive squares in only one way, i.e., 10176100 + 10125124 = 3190^2 + 3182^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20301199 and 20301208.

It is not an unprimeable number, because it can be changed into a prime (20301221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1268819 + ... + 1268834.

Almost surely, 2^20301224 is an apocalyptic number.

It is an amenable number.

20301224 is a deficient number, since it is larger than the sum of its proper divisors (17763586).

20301224 is a wasteful number, since it uses less digits than its factorization.

20301224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537659 (or 2537655 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20301224 is about 4505.6879607891. The cubic root of 20301224 is about 272.7977230255.

Adding to 20301224 its reverse (42210302), we get a palindrome (62511526).

The spelling of 20301224 in words is "twenty million, three hundred one thousand, two hundred twenty-four".