20224616 has 8 divisors (see below), whose sum is σ = 37921170. Its totient is φ = 10112304.

The previous prime is 20224609. The next prime is 20224621. The reversal of 20224616 is 61642202.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 64516 = 4490^2 + 254^2 .

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 = 20224591 and 20224600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264031 + ... + 1264046.

Almost surely, 2^20224616 is an apocalyptic number.

It is an amenable number.

20224616 is a deficient number, since it is larger than the sum of its proper divisors (17696554).

20224616 is a wasteful number, since it uses less digits than its factorization.

20224616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528083 (or 2528079 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20224616 is about 4497.1786711226. The cubic root of 20224616 is about 272.4541504657.

Adding to 20224616 its reverse (61642202), we get a palindrome (81866818).

The spelling of 20224616 in words is "twenty million, two hundred twenty-four thousand, six hundred sixteen".