226560640 has 32 divisors (see below), whose sum is σ = 541623060. Its totient is φ = 90624000.

The previous prime is 226560619. The next prime is 226560647. The reversal of 226560640 is 46065622.

It can be written as a sum of positive squares in 2 ways, for example, as 226442304 + 118336 = 15048^2 + 344^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226560647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176361 + ... + 177640.

Almost surely, 2^226560640 is an apocalyptic number.

226560640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226560640 is an abundant number, since it is smaller than the sum of its proper divisors (315062420).

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

226560640 is an equidigital number, since it uses as much as digits as its factorization.

226560640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354020 (or 354008 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 226560640 is about 15051.9314375265. The cubic root of 226560640 is about 609.6232018596.

The spelling of 226560640 in words is "two hundred twenty-six million, five hundred sixty thousand, six hundred forty".