227981680 has 20 divisors (see below), whose sum is σ = 530057592. Its totient is φ = 91192640.

The previous prime is 227981669. The next prime is 227981683. The reversal of 227981680 is 86189722.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227981683) 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, 1424806 + ... + 1424965.

Almost surely, 2^227981680 is an apocalyptic number.

227981680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227981680 is an abundant number, since it is smaller than the sum of its proper divisors (302075912).

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

227981680 is a wasteful number, since it uses less digits than its factorization.

227981680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849784 (or 2849778 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 227981680 is about 15099.0622225355. The cubic root of 227981680 is about 610.8951115664.

The spelling of 227981680 in words is "two hundred twenty-seven million, nine hundred eighty-one thousand, six hundred eighty".