227981880 has 96 divisors (see below), whose sum is σ = 846799200. Its totient is φ = 52109568.

The previous prime is 227981867. The next prime is 227981909. The reversal of 227981880 is 88189722.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42715 + ... + 47754.

It is an arithmetic number, because the mean of its divisors is an integer number (8820825).

Almost surely, 2^227981880 is an apocalyptic number.

227981880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227981880 is an abundant number, since it is smaller than the sum of its proper divisors (618817320).

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

227981880 is a wasteful number, since it uses less digits than its factorization.

227981880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90493 (or 90486 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 227981880 is about 15099.0688454620. The cubic root of 227981880 is about 610.8952902050.

The spelling of 227981880 in words is "two hundred twenty-seven million, nine hundred eighty-one thousand, eight hundred eighty".