1232289 has 12 divisors (see below), whose sum is σ = 1790100. Its totient is φ = 816864.

The previous prime is 1232269. The next prime is 1232291. The reversal of 1232289 is 9822321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 501264 + 731025 = 708^2 + 855^2 .

It is not a de Polignac number, because 1232289 - 2¹¹ = 1230241 is a prime.

It is a d-powerful number, because it can be written as 1 + 2² + 3¹¹ + 2¹⁸ + 2¹⁹ + 8⁶ + 9⁴ .

1232289 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1232269) 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, 2167 + ... + 2675.

It is an arithmetic number, because the mean of its divisors is an integer number (149175).

2^1232289 is an apocalyptic number.

It is an amenable number.

1232289 is a deficient number, since it is larger than the sum of its proper divisors (557811).

1232289 is a wasteful number, since it uses less digits than its factorization.

1232289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 781 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1232289 is about 1110.0851318705. The cubic root of 1232289 is about 107.2105499846.

It can be divided in two parts, 1232 and 289, that added together give a square (1521 = 39²).

The spelling of 1232289 in words is "one million, two hundred thirty-two thousand, two hundred eighty-nine".