228007529 has 4 divisors (see below), whose sum is σ = 228064980. Its totient is φ = 227950080.

The previous prime is 228007523. The next prime is 228007531. The reversal of 228007529 is 925700822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189007504 + 39000025 = 13748^2 + 6245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228007529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228007523) 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, 22292 + ... + 30869.

It is an arithmetic number, because the mean of its divisors is an integer number (57016245).

Almost surely, 2^228007529 is an apocalyptic number.

It is an amenable number.

228007529 is a deficient number, since it is larger than the sum of its proper divisors (57451).

228007529 is an equidigital number, since it uses as much as digits as its factorization.

228007529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57450.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 228007529 is about 15099.9181785863. The cubic root of 228007529 is about 610.9181988469.

The spelling of 228007529 in words is "two hundred twenty-eight million, seven thousand, five hundred twenty-nine".