20221450 has 12 divisors (see below), whose sum is σ = 37611990. Its totient is φ = 8088560.

The previous prime is 20221441. The next prime is 20221457. The reversal of 20221450 is 5412202.

It can be written as a sum of positive squares in 3 ways, for example, as 16072081 + 4149369 = 4009^2 + 2037^2 .

It is not an unprimeable number, because it can be changed into a prime (20221457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202165 + ... + 202264.

Almost surely, 2^20221450 is an apocalyptic number.

20221450 is a deficient number, since it is larger than the sum of its proper divisors (17390540).

20221450 is a wasteful number, since it uses less digits than its factorization.

20221450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404441 (or 404436 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20221450 is about 4496.8266588785. The cubic root of 20221450 is about 272.4399328929.

Adding to 20221450 its reverse (5412202), we get a palindrome (25633652).

The spelling of 20221450 in words is "twenty million, two hundred twenty-one thousand, four hundred fifty".