228151688 has 16 divisors (see below), whose sum is σ = 428806860. Its totient is φ = 113803200.

The previous prime is 228151687. The next prime is 228151699. The reversal of 228151688 is 886151822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 208455844 + 19695844 = 14438^2 + 4438^2 .

It is not an unprimeable number, because it can be changed into a prime (228151687) 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, 30503 + ... + 37238.

Almost surely, 2^228151688 is an apocalyptic number.

It is an amenable number.

228151688 is a deficient number, since it is larger than the sum of its proper divisors (200655172).

228151688 is a wasteful number, since it uses less digits than its factorization.

228151688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68168 (or 68164 counting only the distinct ones).

The product of its digits is 61440, while the sum is 41.

The square root of 228151688 is about 15104.6909269935. The cubic root of 228151688 is about 611.0469238394.

The spelling of 228151688 in words is "two hundred twenty-eight million, one hundred fifty-one thousand, six hundred eighty-eight".