227321660420 has 24 divisors (see below), whose sum is σ = 490277528664. Its totient is φ = 88471132416.

The previous prime is 227321660413. The next prime is 227321660437. The reversal of 227321660420 is 24066123722.

It can be written as a sum of positive squares in 4 ways, for example, as 52492308544 + 174829351876 = 229112^2 + 418126^2 .

It is a super-2 number, since 2×227321660420² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153594977 + ... + 153596456.

It is an arithmetic number, because the mean of its divisors is an integer number (20428230361).

Almost surely, 2^227321660420 is an apocalyptic number.

227321660420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227321660420 is an abundant number, since it is smaller than the sum of its proper divisors (262955868244).

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

227321660420 is a wasteful number, since it uses less digits than its factorization.

227321660420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307191479 (or 307191477 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 227321660420 in words is "two hundred twenty-seven billion, three hundred twenty-one million, six hundred sixty thousand, four hundred twenty".