1230398 has 16 divisors (see below), whose sum is σ = 2042880. Its totient is φ = 552096.

The previous prime is 1230391. The next prime is 1230401. The reversal of 1230398 is 8930321.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230391) 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 7 ways as a sum of consecutive naturals, for example, 323 + ... + 1601.

It is an arithmetic number, because the mean of its divisors is an integer number (127680).

2^1230398 is an apocalyptic number.

1230398 is a deficient number, since it is larger than the sum of its proper divisors (812482).

1230398 is a wasteful number, since it uses less digits than its factorization.

1230398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1230398 is about 1109.2330683855. The cubic root of 1230398 is about 107.1556821896.

The spelling of 1230398 in words is "one million, two hundred thirty thousand, three hundred ninety-eight".