20072224 has 12 divisors (see below), whose sum is σ = 39517254. Its totient is φ = 10036096.

The previous prime is 20072209. The next prime is 20072267. The reversal of 20072224 is 42227002.

It can be written as a sum of positive squares in only one way, i.e., 19536400 + 535824 = 4420^2 + 732^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313597 + ... + 313660.

Almost surely, 2^20072224 is an apocalyptic number.

It is an amenable number.

20072224 is a deficient number, since it is larger than the sum of its proper divisors (19445030).

20072224 is an equidigital number, since it uses as much as digits as its factorization.

20072224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627267 (or 627259 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 20072224 is about 4480.2035668036. The cubic root of 20072224 is about 271.7681126312.

Adding to 20072224 its reverse (42227002), we get a palindrome (62299226).

The spelling of 20072224 in words is "twenty million, seventy-two thousand, two hundred twenty-four".