228551382 has 20 divisors (see below), whose sum is σ = 512124756. Its totient is φ = 76183740.

The previous prime is 228551381. The next prime is 228551413. The reversal of 228551382 is 283155822.

228551382 is a `hidden beast` number, since 2 + 28 + 551 + 3 + 82 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228551381) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 705244 + ... + 705567.

Almost surely, 2^228551382 is an apocalyptic number.

228551382 is an abundant number, since it is smaller than the sum of its proper divisors (283573374).

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

228551382 is a wasteful number, since it uses less digits than its factorization.

228551382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410825 (or 1410816 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 228551382 is about 15117.9159277990. The cubic root of 228551382 is about 611.4035422928.

The spelling of 228551382 in words is "two hundred twenty-eight million, five hundred fifty-one thousand, three hundred eighty-two".