1232528869 has 12 divisors (see below), whose sum is σ = 1458977548. Its totient is φ = 1034288640.

The previous prime is 1232528837. The next prime is 1232528887. The reversal of 1232528869 is 9688252321.

It can be written as a sum of positive squares in 2 ways, for example, as 417711844 + 814817025 = 20438^2 + 28545^2 .

It is not a de Polignac number, because 1232528869 - 2⁵ = 1232528837 is a prime.

It is a super-3 number, since 3×1232528869³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232528809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390204 + ... + 393349.

Almost surely, 2^1232528869 is an apocalyptic number.

It is an amenable number.

1232528869 is a deficient number, since it is larger than the sum of its proper divisors (226448679).

1232528869 is a wasteful number, since it uses less digits than its factorization.

1232528869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783588 (or 783577 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 1232528869 is about 35107.3905182370. The cubic root of 1232528869 is about 1072.1750582556.

The spelling of 1232528869 in words is "one billion, two hundred thirty-two million, five hundred twenty-eight thousand, eight hundred sixty-nine".