228881982 has 32 divisors (see below), whose sum is σ = 553934592. Its totient is φ = 61547904.

The previous prime is 228881977. The next prime is 228882011. The reversal of 228881982 is 289188822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159568 + ... + 160995.

It is an arithmetic number, because the mean of its divisors is an integer number (17310456).

Almost surely, 2^228881982 is an apocalyptic number.

228881982 is an abundant number, since it is smaller than the sum of its proper divisors (325052610).

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

228881982 is a wasteful number, since it uses less digits than its factorization.

228881982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320592.

The product of its digits is 294912, while the sum is 48.

The square root of 228881982 is about 15128.8460234084. The cubic root of 228881982 is about 611.6981990524.

The spelling of 228881982 in words is "two hundred twenty-eight million, eight hundred eighty-one thousand, nine hundred eighty-two".