228187782 has 12 divisors (see below), whose sum is σ = 494406900. Its totient is φ = 76062588.

The previous prime is 228187741. The next prime is 228187801. The reversal of 228187782 is 287781822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6338532 + ... + 6338567.

It is an arithmetic number, because the mean of its divisors is an integer number (41200575).

Almost surely, 2^228187782 is an apocalyptic number.

228187782 is an abundant number, since it is smaller than the sum of its proper divisors (266219118).

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

228187782 is a wasteful number, since it uses less digits than its factorization.

228187782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12677107 (or 12677104 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 228187782 is about 15105.8856741338. The cubic root of 228187782 is about 611.0791450411.

The spelling of 228187782 in words is "two hundred twenty-eight million, one hundred eighty-seven thousand, seven hundred eighty-two".