226521040 has 40 divisors (see below), whose sum is σ = 554384160. Its totient is φ = 85838976.

The previous prime is 226521019. The next prime is 226521079. The reversal of 226521040 is 40125622.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72994 + ... + 76033.

It is an arithmetic number, because the mean of its divisors is an integer number (13859604).

Almost surely, 2^226521040 is an apocalyptic number.

226521040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226521040 is an abundant number, since it is smaller than the sum of its proper divisors (327863120).

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

226521040 is a wasteful number, since it uses less digits than its factorization.

226521040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149059 (or 149053 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 226521040 is about 15050.6159342400. The cubic root of 226521040 is about 609.5876815894.

Adding to 226521040 its reverse (40125622), we get a palindrome (266646662).

The spelling of 226521040 in words is "two hundred twenty-six million, five hundred twenty-one thousand, forty".