228717532 has 12 divisors (see below), whose sum is σ = 401134720. Its totient is φ = 114107616.

The previous prime is 228717521. The next prime is 228717583. The reversal of 228717532 is 235717822.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 228717491 and 228717500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60732 + ... + 64387.

Almost surely, 2^228717532 is an apocalyptic number.

It is an amenable number.

228717532 is a deficient number, since it is larger than the sum of its proper divisors (172417188).

228717532 is a wasteful number, since it uses less digits than its factorization.

228717532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125580 (or 125578 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 228717532 is about 15123.4100651936. The cubic root of 228717532 is about 611.5516637513.

It can be divided in two parts, 22871 and 7532, that added together give a palindrome (30403).

The spelling of 228717532 in words is "two hundred twenty-eight million, seven hundred seventeen thousand, five hundred thirty-two".