228987512 has 32 divisors (see below), whose sum is σ = 467166000. Its totient is φ = 104592384.

The previous prime is 228987511. The next prime is 228987523. The reversal of 228987512 is 215789822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228987511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262 + ... + 21437.

Almost surely, 2^228987512 is an apocalyptic number.

It is an amenable number.

228987512 is an abundant number, since it is smaller than the sum of its proper divisors (238178488).

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

228987512 is a wasteful number, since it uses less digits than its factorization.

228987512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22815 (or 22811 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The square root of 228987512 is about 15132.3333296620. Note that the first 4 decimals coincide. The cubic root of 228987512 is about 611.7921959555.

The spelling of 228987512 in words is "two hundred twenty-eight million, nine hundred eighty-seven thousand, five hundred twelve".