1233209028 has 12 divisors (see below), whose sum is σ = 2877487760. Its totient is φ = 411069672.

The previous prime is 1233209027. The next prime is 1233209069. The reversal of 1233209028 is 8209023321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1233208986 and 1233209004.

It is not an unprimeable number, because it can be changed into a prime (1233209023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51383698 + ... + 51383721.

Almost surely, 2^1233209028 is an apocalyptic number.

It is an amenable number.

1233209028 is an abundant number, since it is smaller than the sum of its proper divisors (1644278732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1233209028 is a wasteful number, since it uses less digits than its factorization.

1233209028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102767426 (or 102767424 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1233209028 is about 35117.0760172313. The cubic root of 1233209028 is about 1072.3722450942.

The spelling of 1233209028 in words is "one billion, two hundred thirty-three million, two hundred nine thousand, twenty-eight".