20224045 has 8 divisors (see below), whose sum is σ = 24295320. Its totient is φ = 16161600.

The previous prime is 20224031. The next prime is 20224069. The reversal of 20224045 is 54042202.

It can be written as a sum of positive squares in 4 ways, for example, as 1022121 + 19201924 = 1011^2 + 4382^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20224045 - 2⁵ = 20224013 is a prime.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 4951 + ... + 8059.

It is an arithmetic number, because the mean of its divisors is an integer number (3036915).

Almost surely, 2^20224045 is an apocalyptic number.

It is an amenable number.

20224045 is a deficient number, since it is larger than the sum of its proper divisors (4071275).

20224045 is a wasteful number, since it uses less digits than its factorization.

20224045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4415.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 20224045 is about 4497.1151864279. The cubic root of 20224045 is about 272.4515863827.

Adding to 20224045 its reverse (54042202), we get a palindrome (74266247).

It can be divided in two parts, 2022 and 4045, that multiplied together give a triangular number (8178990 = T₄₀₄₄).

The spelling of 20224045 in words is "twenty million, two hundred twenty-four thousand, forty-five".