45220224 has 64 divisors (see below), whose sum is σ = 137283840. Its totient is φ = 12919296.

The previous prime is 45220223. The next prime is 45220229. The reversal of 45220224 is 42202254.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×45220224² = 4089737317220352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 45220224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45220223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5724 + ... + 11099.

It is an arithmetic number, because the mean of its divisors is an integer number (2145060).

Almost surely, 2^45220224 is an apocalyptic number.

It is an amenable number.

45220224 is an abundant number, since it is smaller than the sum of its proper divisors (92063616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45220224 is a wasteful number, since it uses less digits than its factorization.

45220224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16847 (or 16835 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 45220224 is about 6724.5984266720. The cubic root of 45220224 is about 356.2686185406.

Adding to 45220224 its reverse (42202254), we get a palindrome (87422478).

The spelling of 45220224 in words is "forty-five million, two hundred twenty thousand, two hundred twenty-four".