226563444 has 18 divisors (see below), whose sum is σ = 572702130. Its totient is φ = 75521136.

The previous prime is 226563433. The next prime is 226563451. The reversal of 226563444 is 444365622.

It can be written as a sum of positive squares in only one way, i.e., 211353444 + 15210000 = 14538^2 + 3900^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×226563444² = 102661988314282272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6293429 = 226563444 / (2 + 2 + 6 + 5 + 6 + 3 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 226563399 and 226563408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3146679 + ... + 3146750.

It is an arithmetic number, because the mean of its divisors is an integer number (31816785).

Almost surely, 2^226563444 is an apocalyptic number.

It is an amenable number.

226563444 is an abundant number, since it is smaller than the sum of its proper divisors (346138686).

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

226563444 is a wasteful number, since it uses less digits than its factorization.

226563444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293439 (or 6293434 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 226563444 is about 15052.0245814309. The cubic root of 226563444 is about 609.6257168249.

The spelling of 226563444 in words is "two hundred twenty-six million, five hundred sixty-three thousand, four hundred forty-four".