226251720 has 48 divisors (see below), whose sum is σ = 735319260. Its totient is φ = 60333696.

The previous prime is 226251709. The next prime is 226251721. The reversal of 226251720 is 27152622.

226251720 is a `hidden beast` number, since 2 + 2 + 625 + 17 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 219810276 + 6441444 = 14826^2 + 2538^2 .

It is not an unprimeable number, because it can be changed into a prime (226251721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313879 + ... + 314598.

Almost surely, 2^226251720 is an apocalyptic number.

226251720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226251720 is an abundant number, since it is smaller than the sum of its proper divisors (509067540).

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

226251720 is a wasteful number, since it uses less digits than its factorization.

226251720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628494 (or 628487 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 226251720 is about 15041.6661311173. Note that the first 3 decimals coincide. The cubic root of 226251720 is about 609.3459979886.

The spelling of 226251720 in words is "two hundred twenty-six million, two hundred fifty-one thousand, seven hundred twenty".