228307529 has 16 divisors (see below), whose sum is σ = 244187136. Its totient is φ = 213099600.

The previous prime is 228307523. The next prime is 228307531. The reversal of 228307529 is 925703822.

It is a cyclic number.

It is not a de Polignac number, because 228307529 - 2¹² = 228303433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 228307492 and 228307501.

It is not an unprimeable number, because it can be changed into a prime (228307523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102344 + ... + 104550.

It is an arithmetic number, because the mean of its divisors is an integer number (15261696).

Almost surely, 2^228307529 is an apocalyptic number.

It is an amenable number.

228307529 is a deficient number, since it is larger than the sum of its proper divisors (15879607).

228307529 is a wasteful number, since it uses less digits than its factorization.

228307529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 228307529 is about 15109.8487417975. The cubic root of 228307529 is about 611.1860191507.

The spelling of 228307529 in words is "two hundred twenty-eight million, three hundred seven thousand, five hundred twenty-nine".