228723532 has 6 divisors (see below), whose sum is σ = 400266188. Its totient is φ = 114361764.

The previous prime is 228723497. The next prime is 228723533. The reversal of 228723532 is 235327822.

228723532 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228723533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28590438 + ... + 28590445.

Almost surely, 2^228723532 is an apocalyptic number.

It is an amenable number.

228723532 is a deficient number, since it is larger than the sum of its proper divisors (171542656).

228723532 is a wasteful number, since it uses less digits than its factorization.

228723532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57180887 (or 57180885 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 228723532 is about 15123.6084318525. The cubic root of 228723532 is about 611.5570113634.

The spelling of 228723532 in words is "two hundred twenty-eight million, seven hundred twenty-three thousand, five hundred thirty-two".