226400644 has 12 divisors (see below), whose sum is σ = 397379164. Its totient is φ = 112863744.

The previous prime is 226400639. The next prime is 226400653. The reversal of 226400644 is 446004622.

It can be written as a sum of positive squares in 2 ways, for example, as 147865600 + 78535044 = 12160^2 + 8862^2 .

It is a super-2 number, since 2×226400644² = 102514503207229472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82629 + ... + 85324.

Almost surely, 2^226400644 is an apocalyptic number.

It is an amenable number.

226400644 is a deficient number, since it is larger than the sum of its proper divisors (170978520).

226400644 is a wasteful number, since it uses less digits than its factorization.

226400644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168294 (or 168292 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 226400644 is about 15046.6156992195. The cubic root of 226400644 is about 609.4796637721.

The spelling of 226400644 in words is "two hundred twenty-six million, four hundred thousand, six hundred forty-four".