226515204720 has 720 divisors, whose sum is σ = 956766039840. Its totient is φ = 47719010304.

The previous prime is 226515204647. The next prime is 226515204733. The reversal of 226515204720 is 27402515622.

226515204720 is a `hidden beast` number, since 2 + 2 + 65 + 1 + 520 + 4 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 24797274 + ... + 24806406.

It is an arithmetic number, because the mean of its divisors is an integer number (1328841722).

Almost surely, 2^226515204720 is an apocalyptic number.

226515204720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 226515204720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478383019920).

226515204720 is an abundant number, since it is smaller than the sum of its proper divisors (730250835120).

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

226515204720 is a wasteful number, since it uses less digits than its factorization.

226515204720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9222 (or 9206 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 226515204720 in words is "two hundred twenty-six billion, five hundred fifteen million, two hundred four thousand, seven hundred twenty".