20224455 has 32 divisors (see below), whose sum is σ = 35251200. Its totient is φ = 9862272.

The previous prime is 20224453. The next prime is 20224469. The reversal of 20224455 is 55442202.

It is a happy number.

It is not a de Polignac number, because 20224455 - 2¹ = 20224453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20224453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7042 + ... + 9488.

It is an arithmetic number, because the mean of its divisors is an integer number (1101600).

Almost surely, 2^20224455 is an apocalyptic number.

20224455 is a deficient number, since it is larger than the sum of its proper divisors (15026745).

20224455 is a wasteful number, since it uses less digits than its factorization.

20224455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 20224455 is about 4497.1607709754. The cubic root of 20224455 is about 272.4534274980.

Adding to 20224455 its reverse (55442202), we get a palindrome (75666657).

The spelling of 20224455 in words is "twenty million, two hundred twenty-four thousand, four hundred fifty-five".